More GOS arduino files - oops missed them last commit.
inmarket
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82cb03947c
commit
9c7dbd8d7e
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/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#include "gfx.h"
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#if GFX_USE_OS_ARDUINO
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#include <string.h> // Prototype for memcpy()
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static void _gosThreadsInit(void);
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/*********************************************************
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* Initialise
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*********************************************************/
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void _gosInit(void)
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{
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/* No initialization of the operating system itself is needed as there isn't one.
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* On the other hand the C runtime should still already be initialized before
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* getting here!
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*/
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#warning "GOS: Arduino - Make sure you initialize your hardware and the C runtime before calling gfxInit() in your application!"
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// Start the scheduler
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_gosThreadsInit();
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}
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void _gosDeinit(void)
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{
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/* ToDo */
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}
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/*********************************************************
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* Exit everything functions
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*********************************************************/
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void gfxHalt(const char *msg) {
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volatile uint32_t dummy;
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(void) msg;
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while(1)
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dummy++;
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}
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void gfxExit(void) {
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volatile uint32_t dummy;
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while(1)
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dummy++;
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}
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/*********************************************************
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* Head allocation functions
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*********************************************************/
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#include <stdlib.h> // Prototype for malloc(), realloc() and free()
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void *gfxAlloc(size_t sz) {
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return malloc(sz);
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}
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void *gfxRealloc(void *ptr, size_t oldsz, size_t newsz) {
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(void) oldsz;
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return realloc(ptr, newsz);
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}
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void gfxFree(void *ptr) {
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free(ptr);
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}
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/*********************************************************
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* Semaphores and critical region functions
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*********************************************************/
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#if !defined(INTERRUPTS_OFF) || !defined(INTERRUPTS_ON)
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#define INTERRUPTS_OFF()
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#define INTERRUPTS_ON()
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#endif
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void gfxSystemLock(void) {
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INTERRUPTS_OFF();
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}
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void gfxSystemUnlock(void) {
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INTERRUPTS_ON();
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}
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void gfxMutexInit(gfxMutex *pmutex) {
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pmutex[0] = 0;
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}
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void gfxMutexEnter(gfxMutex *pmutex) {
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INTERRUPTS_OFF();
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while (pmutex[0]) {
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INTERRUPTS_ON();
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gfxYield();
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INTERRUPTS_OFF();
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}
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pmutex[0] = 1;
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INTERRUPTS_ON();
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}
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void gfxMutexExit(gfxMutex *pmutex) {
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pmutex[0] = 0;
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}
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void gfxSemInit(gfxSem *psem, semcount_t val, semcount_t limit) {
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psem->cnt = val;
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psem->limit = limit;
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}
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bool_t gfxSemWait(gfxSem *psem, delaytime_t ms) {
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systemticks_t starttm, delay;
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// Convert our delay to ticks
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switch (ms) {
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case TIME_IMMEDIATE:
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delay = TIME_IMMEDIATE;
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break;
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case TIME_INFINITE:
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delay = TIME_INFINITE;
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break;
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default:
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delay = gfxMillisecondsToTicks(ms);
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if (!delay) delay = 1;
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starttm = gfxSystemTicks();
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}
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INTERRUPTS_OFF();
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while (psem->cnt <= 0) {
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INTERRUPTS_ON();
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// Check if we have exceeded the defined delay
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switch (delay) {
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case TIME_IMMEDIATE:
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return FALSE;
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case TIME_INFINITE:
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break;
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default:
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if (gfxSystemTicks() - starttm >= delay)
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return FALSE;
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break;
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}
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gfxYield();
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INTERRUPTS_OFF();
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}
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psem->cnt--;
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INTERRUPTS_ON();
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return TRUE;
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}
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bool_t gfxSemWaitI(gfxSem *psem) {
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if (psem->cnt <= 0)
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return FALSE;
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psem->cnt--;
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return TRUE;
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}
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void gfxSemSignal(gfxSem *psem) {
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INTERRUPTS_OFF();
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gfxSemSignalI(psem);
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INTERRUPTS_ON();
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}
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void gfxSemSignalI(gfxSem *psem) {
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if (psem->cnt < psem->limit)
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psem->cnt++;
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}
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/*********************************************************
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* Sleep functions
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*********************************************************/
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void gfxSleepMilliseconds(delaytime_t ms) {
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systemticks_t starttm, delay;
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// Safety first
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switch (ms) {
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case TIME_IMMEDIATE:
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return;
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case TIME_INFINITE:
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while(1)
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gfxYield();
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return;
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}
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// Convert our delay to ticks
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delay = gfxMillisecondsToTicks(ms);
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starttm = gfxSystemTicks();
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do {
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gfxYield();
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} while (gfxSystemTicks() - starttm < delay);
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}
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void gfxSleepMicroseconds(delaytime_t ms) {
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systemticks_t starttm, delay;
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// Safety first
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switch (ms) {
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case TIME_IMMEDIATE:
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return;
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case TIME_INFINITE:
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while(1)
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gfxYield();
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return;
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}
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// Convert our delay to ticks
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delay = gfxMillisecondsToTicks(ms/1000);
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starttm = gfxSystemTicks();
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do {
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gfxYield();
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} while (gfxSystemTicks() - starttm < delay);
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}
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/*********************************************************
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* Threading functions
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*********************************************************/
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/**
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* There are some compilers we know how they store the jmpbuf. For those
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* we can use the constant macro definitions. For others we have to "auto-detect".
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* Auto-detection is hairy and there is no guarantee it will work on all architectures.
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* For those it doesn't - read the compiler manuals and the library source code to
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* work out the correct macro values.
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* You can use the debugger to work out the values for your compiler and put them here.
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* Defining these macros as constant values makes the system behaviour guaranteed but also
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* makes your code compiler and cpu architecture dependant.
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*/
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#if 0
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// Define your compiler constant values here.
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// These example values are for mingw32 compiler (x86).
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#define AUTO_DETECT_MASK FALSE
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#define STACK_DIR_UP FALSE
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#define MASK1 0x00000011
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#define MASK2 0x00000000
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#define STACK_BASE 9
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#else
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#define AUTO_DETECT_MASK TRUE
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#define STACK_DIR_UP stackdirup // TRUE if the stack grow up instead of down
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#define MASK1 jmpmask1 // The 1st mask of jmp_buf elements that need relocation
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#define MASK2 jmpmask2 // The 2nd mask of jmp_buf elements that need relocation
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#define STACK_BASE stackbase // The base of the stack frame relative to the local variables
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static bool_t stackdirup;
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static uint32_t jmpmask1;
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static uint32_t jmpmask2;
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static size_t stackbase;
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#endif
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#include <setjmp.h> /* jmp_buf, setjmp(), longjmp() */
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/**
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* Some compilers define a _setjmp() and a setjmp().
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* The difference between them is that setjmp() saves the signal masks.
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* That is of no use to us so prefer to use the _setjmp() methods.
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* If they don't exist compile them to be the standard setjmp() function.
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* Similarly for longjmp().
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*/
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#if (!defined(setjmp) && !defined(_setjmp)) || defined(__KEIL__) || defined(__C51__)
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#define _setjmp setjmp
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#endif
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#if (!defined(longjmp) && !defined(_longjmp)) || defined(__KEIL__) || defined(__C51__)
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#define _longjmp longjmp
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#endif
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typedef struct thread {
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struct thread * next; // Next thread
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int flags; // Flags
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#define FLG_THD_ALLOC 0x0001
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#define FLG_THD_MAIN 0x0002
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#define FLG_THD_DEAD 0x0004
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#define FLG_THD_WAIT 0x0008
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size_t size; // Size of the thread stack (including this structure)
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threadreturn_t (*fn)(void *param); // Thread function
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void * param; // Parameter for the thread function
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jmp_buf cxt; // The current thread context.
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} thread;
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typedef struct threadQ {
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thread *head;
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thread *tail;
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} threadQ;
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static threadQ readyQ; // The list of ready threads
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static threadQ deadQ; // Where we put threads waiting to be deallocated
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static thread * current; // The current running thread
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static thread mainthread; // The main thread context
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static void Qinit(threadQ * q) {
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q->head = q->tail = 0;
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}
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static void Qadd(threadQ * q, thread *t) {
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t->next = 0;
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if (q->head) {
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q->tail->next = t;
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q->tail = t;
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} else
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q->head = q->tail = t;
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}
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static thread *Qpop(threadQ * q) {
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struct thread * t;
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if (!q->head)
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return 0;
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t = q->head;
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q->head = t->next;
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return t;
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}
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#if AUTO_DETECT_MASK
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// The structure for the saved stack frame information
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typedef struct saveloc {
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char * localptr;
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jmp_buf cxt;
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} saveloc;
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// A pointer to our auto-detection buffer.
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static saveloc *pframeinfo;
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/* These functions are not static to prevent the compiler removing them as functions */
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void get_stack_state(void) {
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char c;
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pframeinfo->localptr = (char *)&c;
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_setjmp(pframeinfo->cxt);
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}
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void get_stack_state_in_fn(void) {
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pframeinfo++;
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get_stack_state();
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pframeinfo--;
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}
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#endif
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static void _gosThreadsInit(void) {
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Qinit(&readyQ);
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current = &mainthread;
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current->next = 0;
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current->size = sizeof(thread);
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current->flags = FLG_THD_MAIN;
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current->fn = 0;
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current->param = 0;
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#if AUTO_DETECT_MASK
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{
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uint32_t i;
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char ** pout;
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char ** pin;
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size_t diff;
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char * framebase;
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// Allocate a buffer to store our test data
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pframeinfo = gfxAlloc(sizeof(saveloc)*2);
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// Get details of the stack frame from within a function
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get_stack_state_in_fn();
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// Get details of the stack frame outside the function
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get_stack_state();
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/* Work out the frame entries to relocate by treating the jump buffer as an array of pointers */
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stackdirup = pframeinfo[1].localptr > pframeinfo[0].localptr;
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pout = (char **)pframeinfo[0].cxt;
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pin = (char **)pframeinfo[1].cxt;
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diff = pframeinfo[0].localptr - pframeinfo[1].localptr;
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framebase = pframeinfo[0].localptr;
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jmpmask1 = jmpmask2 = 0;
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for (i = 0; i < sizeof(jmp_buf)/sizeof(char *); i++, pout++, pin++) {
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if ((size_t)(*pout - *pin) == diff) {
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if (i < 32)
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jmpmask1 |= 1 << i;
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else
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jmpmask2 |= 1 << (i-32);
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if (stackdirup) {
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if (framebase > *pout)
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framebase = *pout;
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} else {
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if (framebase < *pout)
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framebase = *pout;
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}
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}
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}
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stackbase = stackdirup ? (pframeinfo[0].localptr - framebase) : (framebase - pframeinfo[0].localptr);
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// Clean up
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gfxFree(pframeinfo);
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}
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#endif
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}
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gfxThreadHandle gfxThreadMe(void) {
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return (gfxThreadHandle)current;
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}
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void gfxYield(void) {
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if (!_setjmp(current->cxt)) {
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// Add us back to the Queue
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Qadd(&readyQ, current);
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// Check if there are dead processes to deallocate
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while ((current = Qpop(&deadQ)))
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gfxFree(current);
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// Run the next process
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current = Qpop(&readyQ);
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_longjmp(current->cxt, 1);
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}
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}
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// This routine is not currently public - but it could be.
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void gfxThreadExit(threadreturn_t ret) {
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// Save the results
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current->param = (void *)ret;
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current->flags |= FLG_THD_DEAD;
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// Add us to the dead list if we need deallocation as we can't free ourselves.
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// If someone is waiting on the thread they will do the cleanup.
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if ((current->flags & (FLG_THD_ALLOC|FLG_THD_WAIT)) == FLG_THD_ALLOC)
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Qadd(&deadQ, current);
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// Switch to the next task
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current = Qpop(&readyQ);
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if (!current)
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gfxExit(); // Oops - this should never happen!
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_longjmp(current->cxt, 1);
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}
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gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param) {
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thread * t;
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(void) prio;
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// Ensure we have a minimum stack size
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if (stacksz < sizeof(thread)+64) {
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stacksz = sizeof(thread)+64;
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stackarea = 0;
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}
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if (stackarea) {
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t = (thread *)stackarea;
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t->flags = 0;
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} else {
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t = (thread *)gfxAlloc(stacksz);
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if (!t)
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return 0;
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t->flags = FLG_THD_ALLOC;
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}
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t->size = stacksz;
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t->fn = fn;
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t->param = param;
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if (_setjmp(t->cxt)) {
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// This is the new thread - call the function!
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gfxThreadExit(current->fn(current->param));
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// We never get here
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return 0;
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}
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// Move the stack frame and relocate the context data
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{
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char ** s;
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char * nf;
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int diff;
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uint32_t i;
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// Copy the stack frame
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#if AUTO_DETECT_MASK
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if (STACK_DIR_UP) { // Stack grows up
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nf = (char *)(t) + sizeof(thread) + stackbase;
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memcpy(t+1, (char *)&t - stackbase, stackbase+sizeof(char *));
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} else { // Stack grows down
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nf = (char *)(t) + stacksz - (stackbase + sizeof(char *));
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memcpy(nf, &t, stackbase+sizeof(char *));
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}
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#elif STACK_DIR_UP
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// Stack grows up
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nf = (char *)(t) + sizeof(thread) + stackbase;
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memcpy(t+1, (char *)&t - stackbase, stackbase+sizeof(char *));
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#else
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// Stack grows down
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nf = (char *)(t) + size - (stackbase + sizeof(char *));
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memcpy(nf, &t, stackbase+sizeof(char *));
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#endif
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// Relocate the context data
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s = (char **)(t->cxt);
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diff = nf - (char *)&t;
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// Relocate the elements we know need to be relocated
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for (i = 1; i && i < MASK1; i <<= 1, s++) {
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if ((MASK1 & i))
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*s += diff;
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}
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#ifdef MASK2
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for (i = 1; i && i < MASK2; i <<= 1, s++) {
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if ((MASK1 & i))
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*s += diff;
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}
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#endif
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}
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// Add this thread to the ready queue
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Qadd(&readyQ, t);
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return t;
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}
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threadreturn_t gfxThreadWait(gfxThreadHandle th) {
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thread * t;
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t = th;
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if (t == current)
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return -1;
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// Mark that we are waiting
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t->flags |= FLG_THD_WAIT;
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// Wait for the thread to die
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while(!(t->flags & FLG_THD_DEAD))
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gfxYield();
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|
||||
// Unmark
|
||||
t->flags &= ~FLG_THD_WAIT;
|
||||
|
||||
// Clean up resources if needed
|
||||
if (t->flags & FLG_THD_ALLOC)
|
||||
gfxFree(t);
|
||||
|
||||
// Return the status left by the dead process
|
||||
return (threadreturn_t)t->param;
|
||||
}
|
||||
|
||||
#endif /* GFX_USE_OS_RAW32 */
|
||||
|
|
@ -0,0 +1,113 @@
|
|||
/*
|
||||
* This file is subject to the terms of the GFX License. If a copy of
|
||||
* the license was not distributed with this file, you can obtain one at:
|
||||
*
|
||||
* http://ugfx.org/license.html
|
||||
*/
|
||||
|
||||
/**
|
||||
* The arduino GOS implementation is similar to the bare metal raw32 gos implementation.
|
||||
* It uses cooperative multi-tasking. Be careful
|
||||
* when writing device drivers not to disturb the assumptions this creates by performing
|
||||
* call-backs to uGFX code unless you define the INTERRUPTS_OFF() and INTERRUPTS_ON() macros.
|
||||
* It still requires some C runtime library support...
|
||||
* enough startup to initialise the stack, interrupts, static data etc and call main().
|
||||
* setjmp() and longjmp() - for threading
|
||||
* memcpy() - for heap and threading
|
||||
* malloc(), realloc and free() - if GOS_RAW_HEAP_SIZE == 0
|
||||
*
|
||||
* You must also define the following routines in your own code so that timing functions will work...
|
||||
* systemticks_t gfxSystemTicks(void);
|
||||
* systemticks_t gfxMillisecondsToTicks(delaytime_t ms);
|
||||
*/
|
||||
#ifndef _GOS_ARDUINO_H
|
||||
#define _GOS_ARDUINO_H
|
||||
|
||||
#if GFX_USE_OS_ARDUINO
|
||||
|
||||
#include <Arduino.h>
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Type definitions */
|
||||
/*===========================================================================*/
|
||||
|
||||
typedef bool bool_t;
|
||||
|
||||
#if 0
|
||||
// Already defined by Arduino
|
||||
typedef signed char int8_t;
|
||||
typedef unsigned char uint8_t;
|
||||
typedef signed short int16_t;
|
||||
typedef unsigned short uint16_t;
|
||||
typedef signed int int32_t;
|
||||
typedef unsigned int uint32_t;
|
||||
typedef uint32_t size_t;
|
||||
#endif
|
||||
|
||||
typedef uint32_t delaytime_t;
|
||||
typedef uint32_t systemticks_t;
|
||||
typedef short semcount_t;
|
||||
typedef int threadreturn_t;
|
||||
typedef int threadpriority_t;
|
||||
|
||||
#define DECLARE_THREAD_FUNCTION(fnName, param) threadreturn_t fnName(void *param)
|
||||
#define DECLARE_THREAD_STACK(name, sz) uint8_t name[sz];
|
||||
|
||||
#define TIME_IMMEDIATE 0
|
||||
#define TIME_INFINITE ((delaytime_t)-1)
|
||||
#define MAX_SEMAPHORE_COUNT 0x7FFF
|
||||
#define LOW_PRIORITY 0
|
||||
#define NORMAL_PRIORITY 1
|
||||
#define HIGH_PRIORITY 2
|
||||
|
||||
typedef struct {
|
||||
semcount_t cnt;
|
||||
semcount_t limit;
|
||||
} gfxSem;
|
||||
|
||||
typedef uint32_t gfxMutex;
|
||||
typedef void * gfxThreadHandle;
|
||||
|
||||
#define gfxThreadClose(thread)
|
||||
#define gfxMutexDestroy(pmutex)
|
||||
#define gfxSemDestroy(psem)
|
||||
#define gfxSemCounter(psem) ((psem)->cnt)
|
||||
#define gfxSemCounterI(psem) ((psem)->cnt)
|
||||
|
||||
#define gfxSystemTicks() millis()
|
||||
#define gfxMillisecondsToTicks(ms) (ms)
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void gfxHalt(const char *msg);
|
||||
void gfxExit(void);
|
||||
void *gfxAlloc(size_t sz);
|
||||
void *gfxRealloc(void *ptr, size_t oldsz, size_t newsz);
|
||||
void gfxFree(void *ptr);
|
||||
void gfxYield(void);
|
||||
void gfxSleepMilliseconds(delaytime_t ms);
|
||||
void gfxSleepMicroseconds(delaytime_t ms);
|
||||
//systemticks_t gfxSystemTicks(void);
|
||||
//systemticks_t gfxMillisecondsToTicks(delaytime_t ms);
|
||||
void gfxSystemLock(void);
|
||||
void gfxSystemUnlock(void);
|
||||
void gfxMutexInit(gfxMutex *pmutex);
|
||||
void gfxMutexEnter(gfxMutex *pmutex);
|
||||
void gfxMutexExit(gfxMutex *pmutex);
|
||||
void gfxSemInit(gfxSem *psem, semcount_t val, semcount_t limit);
|
||||
bool_t gfxSemWait(gfxSem *psem, delaytime_t ms);
|
||||
bool_t gfxSemWaitI(gfxSem *psem);
|
||||
void gfxSemSignal(gfxSem *psem);
|
||||
void gfxSemSignalI(gfxSem *psem);
|
||||
gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param);
|
||||
threadreturn_t gfxThreadWait(gfxThreadHandle thread);
|
||||
gfxThreadHandle gfxThreadMe(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* GFX_USE_OS_ARDUINO */
|
||||
#endif /* _GOS_ARDUINO_H */
|
||||
Loading…
Reference in New Issue