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ugfx/drivers/multiple/uGFXnetESP8266/gdisp_lld_uGFXnetESP8266.cpp

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/*
* 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
*/
// We need to include stdio.h below. Turn off GFILE_NEED_STDIO just for this file to prevent conflicts
#define GFILE_NEED_STDIO_MUST_BE_OFF
#include "gfx.h"
#if GFX_USE_GDISP
#include <ESP8266WiFi.h>
#define GDISP_DRIVER_VMT GDISPVMT_uGFXnetESP8266
#include "gdisp_lld_config.h"
#include "../../../src/gdisp/gdisp_driver.h"
#include "uGFXnetProtocol.h"
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 640
#endif
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 480
#endif
#ifndef GDISP_GFXNET_PORT
#define GDISP_GFXNET_PORT GNETCODE_DEFAULT_PORT
#endif
#ifndef GDISP_DONT_WAIT_FOR_NET_DISPLAY
#define GDISP_DONT_WAIT_FOR_NET_DISPLAY GFXOFF
#endif
static WiFiServer server(GDISP_GFXNET_PORT);
static GTimer poller;
static gBool uGFXInitDone;
#ifndef GDISP_GFXNET_WIFI_INIT_FUNCTION
#define GDISP_GFXNET_WIFI_INIT_FUNCTION uGFXnetArduinoWifiInit
#ifndef GDISP_GFXNET_WIFI_SSID
#error "uGFXnetArduino: GDISP_GFXNET_WIFI_SSID is not set. You must define the Wifi SSID"
#endif
#ifndef GDISP_GFXNET_WIFI_PASSWORD
#error "uGFXnetArduino: GDISP_GFXNET_WIFI_PASSWORD is not set. You must define the Wifi password"
#endif
static void uGFXnetArduinoWifiInit(WifiServer *ws) {
WiFi.begin(GDISP_GFXNET_WIFI_SSID, GDISP_GFXNET_WIFI_PASSWORD);
while (WiFi.status() != WL_CONNECTED)
gfxYield();
ws->begin();
}
#else
extern "C" void GDISP_GFXNET_WIFI_INIT_FUNCTION(WifiServer *ws);
#endif
#if GINPUT_NEED_MOUSE
// Include mouse support code
#define GMOUSE_DRIVER_VMT GMOUSEVMT_uGFXnet
#include "../../../src/ginput/ginput_driver_mouse.h"
// Forward definitions
static gBool NMouseInit(GMouse *m, unsigned driverinstance);
static gBool NMouseRead(GMouse *m, GMouseReading *prd);
const GMouseVMT const GMOUSE_DRIVER_VMT[1] = {{
{
GDRIVER_TYPE_MOUSE,
GMOUSE_VFLG_NOPOLL|GMOUSE_VFLG_DYNAMICONLY,
// Extra flags for testing only
//GMOUSE_VFLG_TOUCH|GMOUSE_VFLG_SELFROTATION|GMOUSE_VFLG_DEFAULTFINGER
//GMOUSE_VFLG_CALIBRATE|GMOUSE_VFLG_CAL_EXTREMES|GMOUSE_VFLG_CAL_TEST|GMOUSE_VFLG_CAL_LOADFREE
//GMOUSE_VFLG_ONLY_DOWN|GMOUSE_VFLG_POORUPDOWN
sizeof(GMouse),
_gmouseInitDriver, _gmousePostInitDriver, _gmouseDeInitDriver
},
1, // z_max
0, // z_min
1, // z_touchon
0, // z_touchoff
{ // pen_jitter
0, // calibrate
0, // click
0 // move
},
{ // finger_jitter
0, // calibrate
2, // click
2 // move
},
NMouseInit, // init
0, // deinit
NMouseRead, // get
0, // calsave
0 // calload
}};
#endif
#if GNETCODE_VERSION != GNETCODE_VERSION_1_0
#error "GDISP: uGFXnetESP8266 - This driver only support protocol V1.0"
#endif
#if GDISP_LLD_PIXELFORMAT != GNETCODE_PIXELFORMAT
#error "GDISP: uGFXnetESP8266 - The driver pixel format must match the protocol"
#endif
#define GDISP_FLG_CONNECTED (GDISP_FLG_DRIVER<<0)
#define GDISP_FLG_HAVEDATA (GDISP_FLG_DRIVER<<1)
#define CLIENTFD WifiClient *
/*===========================================================================*/
/* Driver local routines . */
/*===========================================================================*/
typedef struct netPriv {
CLIENTFD netfd; // The current client
unsigned databytes; // How many bytes have been read
uint16_t data[2]; // Buffer for storing data read.
#if GINPUT_NEED_MOUSE
gCoord mousex, mousey;
uint16_t mousebuttons;
GMouse * mouse;
#endif
} netPriv;
#if GDISP_GFXNET_UNSAFE_SOCKETS
static gfxMutex uGFXnetMutex;
#define MUTEX_INIT gfxMutexInit(&uGFXnetMutex)
#define MUTEX_ENTER gfxMutexEnter(&uGFXnetMutex)
#define MUTEX_EXIT gfxMutexExit(&uGFXnetMutex)
#else
#define MUTEX_INIT
#define MUTEX_ENTER
#define MUTEX_EXIT
#endif
static void endcon(GDisplay *g) {
netPriv * priv;
g->flags &= ~GDISP_FLG_CONNECTED;
priv = g->priv;
priv->netfd->stop();
delete priv->netfd;
priv->netfd = 0;
}
/**
* Send a whole packet of data.
* Len is specified in the number of uint16_t's we want to send as our protocol only talks uint16_t's.
* Note that contents of the packet are modified to ensure it will cross the wire in the correct format.
* If the connection closes before we send all the data - the call returns gFalse.
*/
static gBool sendpkt(CLIENTFD fd, uint16_t *pkt, int len) {
// Convert each uint16_t to network order
#if GFX_CPU_ENDIAN == GFX_CPU_ENDIAN_LITTLE
{
int i;
for(i = 0; i < len; i++)
pkt[i] = ((pkt[i]>>8)|(pkt[i]<<8));
}
#endif
// Send it
len *= sizeof(uint16_t);
return fd->write((uint8_t *)pkt, len) == len;
}
static void rxdata(GDisplay *g) {
netPriv * priv;
CLIENTFD fd;
int len;
if ((g->flags & GDISP_FLG_HAVEDATA)) {
// The higher level is still processing the previous data.
// Give it a chance to run by coming back to this data.
return;
}
priv = g->priv;
fd = priv->netfd;
MUTEX_ENTER;
// Are we still connected?
if (!fd->connected()) {
MUTEX_EXIT;
endcon(g);
return;
}
// Is there data available
if (!fd->available()) {
MUTEX_EXIT;
return;
}
// Get the data
if ((len = fd->read(((uint8_t *)priv->data)+priv->databytes, sizeof(priv->data)-priv->databytes, 0)) <= 0) {
// Socket closed or in error state
MUTEX_EXIT;
endcon(g);
return;
}
MUTEX_EXIT;
// Do we have a full reply yet
priv->databytes += len;
if (priv->databytes < sizeof(priv->data))
return;
priv->databytes = 0;
// Convert network byte or to host byte order
#if GFX_CPU_ENDIAN == GFX_CPU_ENDIAN_LITTLE
priv->data[0] = ((priv->data[0]>>8)|(priv->data[0]<<8))
priv->data[1] = ((priv->data[1]>>8)|(priv->data[1]<<8))
#endif
// Process the data received
switch(priv->data[0]) {
#if GINPUT_NEED_MOUSE
case GNETCODE_MOUSE_X: priv->mousex = priv->data[1]; break;
case GNETCODE_MOUSE_Y: priv->mousey = priv->data[1]; break;
case GNETCODE_MOUSE_B:
priv->mousebuttons = priv->data[1];
// Treat the button event as the sync signal
_gmouseWakeup(priv->mouse);
break;
#endif
case GNETCODE_CONTROL:
case GNETCODE_READ:
g->flags |= GDISP_FLG_HAVEDATA;
break;
case GNETCODE_KILL:
gfxHalt("GDISP: uGFXnet - Display sent KILL command");
break;
default:
// Just ignore unrecognised data
break;
}
}
void uGFXnetClientPoller(void *param) {
GDisplay *g;
(void) param;
// Is there a new server connection?
if (server.hasClient()) {
// Look for a display that isn't connected
for(g = 0; (g = (GDisplay *)gdriverGetNext(GDRIVER_TYPE_DISPLAY, (GDriver *)g));) {
// Ignore displays for other controllers
#ifdef GDISP_DRIVER_LIST
if (gvmt(g) != &GDISPVMT_uGFXnet)
continue;
#endif
if (!(g->flags & GDISP_FLG_CONNECTED)) {
netPriv * priv;
// Reset the priv area
priv = g->priv;
priv->netfd = new WifiClient(server.available());
priv->databytes = 0;
priv->mousebuttons = 0;
// Send the initialisation data (2 words at a time)
priv->data[0] = GNETCODE_INIT;
priv->data[1] = GNETCODE_VERSION;
sendpkt(priv->netfd, priv->data, 2);
priv->data[0] = GDISP_SCREEN_WIDTH;
priv->data[1] = GDISP_SCREEN_HEIGHT;
sendpkt(priv->netfd, priv->data, 2);
priv->data[0] = GDISP_LLD_PIXELFORMAT;
priv->data[1] = 1; // We have a mouse
MUTEX_ENTER;
sendpkt(priv->netfd, priv->data, 2);
MUTEX_EXIT;
// The display is now working
g->flags |= GDISP_FLG_CONNECTED;
// Send a redraw all
#if GFX_USE_GWIN && GWIN_NEED_WINDOWMANAGER
gdispGClear(g, gwinGetDefaultBgColor());
gwinRedrawDisplay(g, gFalse);
#endif
break;
}
}
}
// Look for a display that is connected so we can check if it has data
for(g = 0; (g = (GDisplay *)gdriverGetNext(GDRIVER_TYPE_DISPLAY, (GDriver *)g));) {
// Ignore displays for other controllers
#ifdef GDISP_DRIVER_LIST
if (gvmt(g) != &GDISPVMT_uGFXnet)
continue;
#endif
if ((g->flags & GDISP_FLG_CONNECTED))
rxdata(g);
}
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC gBool gdisp_lld_init(GDisplay *g) {
netPriv * priv;
// Initialise the receiver thread (if it hasn't been done already)
if (!uGFXInitDone) {
MUTEX_INIT;
// Init and Start the poller
GDISP_GFXNET_WIFI_INIT_FUNCTION(&server);
// Initialise the poller
gtimerInit(&poller);
gtimerStart(&poller, uGFXnetClientPoller, 0, gTrue, 50);
uGFXInitDone = gTrue;
}
// Create a private area for this window
if (!(priv = gfxAlloc(sizeof(netPriv))))
gfxHalt("GDISP: uGFXnetESP8266 - Memory allocation failed");
memset(priv, 0, sizeof(netPriv));
g->priv = priv;
g->board = 0; // no board interface for this controller
// Create the associated mouse
#if GINPUT_NEED_MOUSE
priv->mouse = (GMouse *)gdriverRegister((const GDriverVMT const *)GMOUSE_DRIVER_VMT, g);
#endif
// Initialise the GDISP structure
g->g.Orientation = GDISP_ROTATE_0;
g->g.Powermode = powerOn;
g->g.Backlight = 100;
g->g.Contrast = 50;
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
return gTrue;
}
#if GDISP_HARDWARE_FLUSH
LLDSPEC void gdisp_lld_flush(GDisplay *g) {
netPriv * priv;
uint16_t buf[1];
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
priv = g->priv;
buf[0] = GNETCODE_FLUSH;
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 1);
MUTEX_EXIT;
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
netPriv * priv;
uint16_t buf[4];
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
priv = g->priv;
buf[0] = GNETCODE_PIXEL;
buf[1] = g->p.x;
buf[2] = g->p.y;
buf[3] = gdispColor2Native(g->p.color);
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 4);
MUTEX_EXIT;
}
#endif
/* ---- Optional Routines ---- */
#if GDISP_HARDWARE_FILLS
LLDSPEC void gdisp_lld_fill_area(GDisplay *g) {
netPriv * priv;
uint16_t buf[6];
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
priv = g->priv;
buf[0] = GNETCODE_FILL;
buf[1] = g->p.x;
buf[2] = g->p.y;
buf[3] = g->p.cx;
buf[4] = g->p.cy;
buf[5] = gdispColor2Native(g->p.color);
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 6);
MUTEX_EXIT;
}
#endif
#if GDISP_HARDWARE_BITFILLS
LLDSPEC void gdisp_lld_blit_area(GDisplay *g) {
netPriv * priv;
gPixel * buffer;
uint16_t buf[5];
gCoord x, y;
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
// Make everything relative to the start of the line
buffer = g->p.ptr;
buffer += g->p.x2*g->p.y1;
priv = g->priv;
buf[0] = GNETCODE_BLIT;
buf[1] = g->p.x;
buf[2] = g->p.y;
buf[3] = g->p.cx;
buf[4] = g->p.cy;
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 5);
for(y = 0; y < g->p.cy; y++, buffer += g->p.x2 - g->p.cx) {
for(x = 0; x < g->p.cx; x++, buffer++) {
buf[0] = gdispColor2Native(buffer[0]);
sendpkt(priv->netfd, buf, 1);
}
}
MUTEX_EXIT;
}
#endif
#if GDISP_HARDWARE_PIXELREAD
LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) {
netPriv * priv;
uint16_t buf[3];
color_t data;
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return 0;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
priv = g->priv;
buf[0] = GNETCODE_READ;
buf[1] = g->p.x;
buf[2] = g->p.y;
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 3);
MUTEX_EXIT;
// Now wait for a reply
while(!(g->flags & GDISP_FLG_HAVEDATA) || priv->data[0] != GNETCODE_READ)
gfxSleepMilliseconds(1);
data = gdispNative2Color(priv->data[1]);
g->flags &= ~GDISP_FLG_HAVEDATA;
return data;
}
#endif
#if GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL
LLDSPEC void gdisp_lld_vertical_scroll(GDisplay *g) {
netPriv * priv;
uint16_t buf[6];
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
priv = g->priv;
buf[0] = GNETCODE_SCROLL;
buf[1] = g->p.x;
buf[2] = g->p.y;
buf[3] = g->p.cx;
buf[4] = g->p.cy;
buf[5] = g->p.y1;
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 6);
MUTEX_EXIT;
}
#endif
#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
LLDSPEC void gdisp_lld_control(GDisplay *g) {
netPriv * priv;
uint16_t buf[3];
gBool allgood;
#if GDISP_DONT_WAIT_FOR_NET_DISPLAY
if (!(g->flags & GDISP_FLG_CONNECTED))
return;
#else
while(!(g->flags & GDISP_FLG_CONNECTED))
gfxSleepMilliseconds(200);
#endif
// Check if we might support the code
switch(g->p.x) {
case GDISP_CONTROL_ORIENTATION:
if (g->g.Orientation == (orientation_t)g->p.ptr)
return;
break;
case GDISP_CONTROL_POWER:
if (g->g.Powermode == (powermode_t)g->p.ptr)
return;
break;
case GDISP_CONTROL_BACKLIGHT:
if (g->g.Backlight == (uint16_t)(int)g->p.ptr)
return;
if ((uint16_t)(int)g->p.ptr > 100)
g->p.ptr = (void *)100;
break;
default:
return;
}
// Send the command
priv = g->priv;
buf[0] = GNETCODE_CONTROL;
buf[1] = g->p.x;
buf[2] = (uint16_t)(int)g->p.ptr;
MUTEX_ENTER;
sendpkt(priv->netfd, buf, 3);
MUTEX_EXIT;
// Now wait for a reply
while(!(g->flags & GDISP_FLG_HAVEDATA) || priv->data[0] != GNETCODE_CONTROL)
gfxSleepMilliseconds(1);
// Extract the return status
allgood = priv->data[1] ? gTrue : gFalse;
g->flags &= ~GDISP_FLG_HAVEDATA;
// Do nothing more if the operation failed
if (!allgood) return;
// Update the local stuff
switch(g->p.x) {
case GDISP_CONTROL_ORIENTATION:
switch((orientation_t)g->p.ptr) {
case GDISP_ROTATE_0:
case GDISP_ROTATE_180:
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_90:
case GDISP_ROTATE_270:
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
break;
case GDISP_CONTROL_POWER:
g->g.Powermode = (powermode_t)g->p.ptr;
break;
case GDISP_CONTROL_BACKLIGHT:
g->g.Backlight = (uint16_t)(int)g->p.ptr;
break;
}
}
#endif
#if GINPUT_NEED_MOUSE
static gBool NMouseInit(GMouse *m, unsigned driverinstance) {
(void) m;
(void) driverinstance;
return gTrue;
}
static gBool NMouseRead(GMouse *m, GMouseReading *pt) {
GDisplay * g;
netPriv * priv;
g = m->display;
priv = g->priv;
pt->x = priv->mousex;
pt->y = priv->mousey;
pt->z = (priv->mousebuttons & GINPUT_MOUSE_BTN_LEFT) ? 1 : 0;
pt->buttons = priv->mousebuttons;
return gTrue;
}
#endif /* GINPUT_NEED_MOUSE */
#endif /* GFX_USE_GDISP */
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