159 lines
3.7 KiB
C
159 lines
3.7 KiB
C
/*
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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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#ifndef _GDISP_LLD_BOARD_H
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#define _GDISP_LLD_BOARD_H
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#include "board_uext.h"
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#define PORT_RESET UEXT_PORT_PIN5
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#define PIN_RESET UEXT_PORTPIN_PIN5
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#define PORT_DC UEXT_PORT_PIN6
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#define PIN_DC UEXT_PORTPIN_PIN6
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#define BIT_BASH TRUE // Native SPI is not working yet
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#define DIRECT_IO TRUE // ChibiOS for the AT91SAM7 requires patch 7669 or higher if DIRECT_IO is FALSE
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#if DIRECT_IO
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#define PinIsOutput(port,pin) ((port)->PIO_OER = 1 << (pin), (port)->PIO_PER = 1 << (pin), (port)->PIO_MDDR = 1 << (pin), (port)->PIO_PPUDR = 1 << (pin))
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#define PinSet(port,pin) (port)->PIO_SODR = 1 << (pin)
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#define PinClear(port,pin) (port)->PIO_CODR = 1 << (pin)
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#else
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#define PinIsOutput(port,pin) palSetPadMode((port), (pin), PAL_MODE_OUTPUT_PUSHPULL)
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#define PinSet(port,pin) palSetPad((port), (pin))
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#define PinClear(port,pin) palClearPad((port), (pin))
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#endif
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#if BIT_BASH
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// simple delays
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void Delay(volatile unsigned long a) { while (a!=0) a--; }
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void Delayc(volatile unsigned char a) { while (a!=0) a--; }
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#else
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static const SPIConfig spiconfig = {
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0,
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/* HW dependent part.*/
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UEXT_SPI_CS_PORT,
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UEXT_SPI_CS_PORTPIN,
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0x01010801 // For AT91SAM7: 8bit, CPOL=1, NCPHA = 0, ClockPhase=0, SCLK = 48Mhz/8 = 6MHz
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};
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#endif
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static inline void init_board(GDisplay *g) {
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(void) g;
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PinIsOutput (PORT_DC, PIN_DC);
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PinIsOutput (PORT_RESET, PIN_RESET);
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PinSet (PORT_RESET, PIN_RESET);
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PinIsOutput (UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
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PinSet (UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
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#if BIT_BASH
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PinIsOutput (UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
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PinSet (UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
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PinIsOutput (UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
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PinSet (UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
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#endif
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}
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static inline void post_init_board(GDisplay *g) {
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(void) g;
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}
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static inline void setpin_reset(GDisplay *g, bool_t state) {
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(void) g;
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(void) state;
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if (state)
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PinClear(PORT_RESET, PIN_RESET);
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else
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PinSet(PORT_RESET, PIN_RESET);
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}
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static inline void set_backlight(GDisplay *g, uint8_t percent) {
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(void) g;
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(void) percent;
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}
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static inline void acquire_bus(GDisplay *g) {
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(void) g;
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#if BIT_BASH
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PinClear(UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
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#else
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spiStart(UEXT_SPI, &spiconfig);
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spiSelect(UEXT_SPI);
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#endif
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}
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static inline void release_bus(GDisplay *g) {
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(void) g;
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#if BIT_BASH
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PinSet(UEXT_SPI_CS_PORT, UEXT_SPI_CS_PORTPIN);
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#else
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spiUnselect(UEXT_SPI);
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spiStop(UEXT_SPI);
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#endif
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}
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static inline void write_cmd(GDisplay *g, uint8_t cmd) {
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(void) g;
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// Command mode please
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PinClear(PORT_DC, PIN_DC);
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#if BIT_BASH
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{
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uint8_t bit;
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for(bit = 0x80; bit; bit >>= 1) {
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if(cmd & bit)
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PinSet(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
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else
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PinClear(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
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Delay(1);
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PinClear(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
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Delay(1);
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PinSet(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
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}
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}
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#else
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spiStartSend(UEXT_SPI, 1, &cmd);
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#endif
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}
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static inline void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
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(void) g;
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// Data mode please
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PinSet(PORT_DC, PIN_DC);
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#if BIT_BASH
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while(length--) {
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uint8_t bit;
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for(bit = 0x80; bit; bit >>= 1) {
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if(*data & bit)
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PinSet(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
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else
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PinClear(UEXT_SPI_MOSI_PORT, UEXT_SPI_MOSI_PORTPIN);
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Delay(1);
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PinClear(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
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Delay(1);
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PinSet(UEXT_SPI_SCK_PORT, UEXT_SPI_SCK_PORTPIN);
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}
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data++;
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}
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#else
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spiStartSend(UEXT_SPI, length, data);
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#endif
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}
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#endif /* _GDISP_LLD_BOARD_H */
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