Hi Tectu, I've posted on the old chibios forum, here is the link to that post. http://forum.chibios.org/phpbb/viewtopi ... =11&t=1308 So I've tested all the suggestions you recommanded last time. But unfortunately I still can't get it to work. I am using the ARMCM4-STM32F407-DISCOVERY board. One question about PAL_STM32_OSPEED_HIGHEST，if I were to not use this macro. Do I replace it with something else or just leave it blank? here is my current gdisp_lld_board.h I've added an extra spi command that sends the 0x70 starting bit to start the spi communication before read and writes. The distributor example code had this line which I could not find it anywhere else in the driver code. #ifndef GDISP_LLD_BOARD_H #define GDISP_LLD_BOARD_H #define SET_RST palSetPad(GPIOB, 8); #define CLR_RST palClearPad(GPIOB, 8); // Peripherial Clock 42MHz SPI2 SPI3 // Peripherial Clock 84MHz SPI1 SPI1 SPI2/3 //#define SPI_BaudRatePrescaler_2 ((uint16_t)0x0000) // 42 MHz 21 MHZ //#define SPI_BaudRatePrescaler_4 ((uint16_t)0x0008) // 21 MHz 10.5 MHz //#define SPI_BaudRatePrescaler_8 ((uint16_t)0x0010) // 10.5 MHz 5.25 MHz //#define SPI_BaudRatePrescaler_16 ((uint16_t)0x0018) // 5.25 MHz 2.626 MHz //#define SPI_BaudRatePrescaler_32 ((uint16_t)0x0020) // 2.626 MHz 1.3125 MHz //#define SPI_BaudRatePrescaler_64 ((uint16_t)0x0028) // 1.3125 MHz 656.25 KHz //#define SPI_BaudRatePrescaler_128 ((uint16_t)0x0030) // 656.25 KHz 328.125 KHz //#define SPI_BaudRatePrescaler_256 ((uint16_t)0x0038) // 328.125 KHz 164.06 KHz /* * * 10.5MHz, CPHA=1, CPOL=0, MSb first, 16 - bits * */ static const SPIConfig spi2cfg1 = { NULL, /* HW dependent part.*/ GPIOB, 12, SPI_CR1_DFF | SPI_CR1_CPHA | SPI_CR1_BR_0 }; static inline void gdisp_lld_init_board(void) { palSetPadMode(GPIOB, 13, PAL_MODE_ALTERNATE(5) ); /* New SCK. */ palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(5) ); /* New MISO. */ palSetPadMode(GPIOB, 15, PAL_MODE_ALTERNATE(5) ); /* New MOSI. */ palSetPadMode(GPIOB, 12, PAL_MODE_OUTPUT_PUSHPULL); /* New CS. */ //palSetPad(GPIOB, 12); palSetPad(GPIOB, 8); spiStart(&SPID2, &spi2cfg1); } static inline void gdisp_lld_reset_pin(bool_t state) { if (state) { palSetPad(GPIOB, 8); } else { palClearPad(GPIOB, 8); } } static inline void acquire_bus(void) { spiAcquireBus(&SPID2); } static inline void release_bus(void) { spiReleaseBus(&SPID2); } static inline void gdisp_lld_write_index(uint16_t data) { //palClearPad(GPIOB, 12); spiSelect(&SPID2); static uint8_t txbuf[1] = {0}; txbuf[0] = 0x70 | 0x00 | 0x00; while((SPI2->SR & SPI_SR_TXE) == 0); spiSend(&SPID2, 1, txbuf); while(((SPI2->SR & SPI_SR_TXE) == 0) || ((SPI2->SR & SPI_SR_BSY) != 0)); txbuf[0] = data & 0xFF; while((SPI2->SR & SPI_SR_TXE) == 0); spiSend(&SPID2, 1, txbuf); while(((SPI2->SR & SPI_SR_TXE) == 0) || ((SPI2->SR & SPI_SR_BSY) != 0)); //txbuf[0] = data >> 8; //txbuf[1] = data & 0xFF; //palSetPad(GPIOB, 12); spiUnselect(&SPID2); } static inline void gdisp_lld_write_data(uint16_t data) { //palClearPad(GPIOB, 12); spiSelect(&SPID2); static uint8_t txbuf[2] = {0}; //txbuf[0] = data; txbuf[0] = 0x70 | 0x00 | 0x02; txbuf[1] = 0x70 | 0x00 | 0x02; while((SPI2->SR & SPI_SR_TXE) == 0); spiSend(&SPID2, 1, txbuf); while(((SPI2->SR & SPI_SR_TXE) == 0) || ((SPI2->SR & SPI_SR_BSY) != 0)); txbuf[0] = (data >> 8); txbuf[1] = (data & 0xFF); while((SPI2->SR & SPI_SR_TXE) == 0); spiSend(&SPID2, 2, txbuf); while(((SPI2->SR & SPI_SR_TXE) == 0) || ((SPI2->SR & SPI_SR_BSY) != 0)); //palSetPad(GPIOB, 12); spiUnselect(&SPID2); } static inline uint16_t gdisp_lld_read_data(void) { //palClearPad(GPIOB, 12); spiSelect(&SPID2); static uint8_t txbuf[1] = {0}; txbuf[0] = 0x70 | 0x01 | 0x02; while((SPI2->SR & SPI_SR_TXE) == 0); spiSend(&SPID2, 1, txbuf); while(((SPI2->SR & SPI_SR_TXE) == 0) || ((SPI2->SR & SPI_SR_BSY) != 0)); static uint8_t rxbuf[3] = {0}; spiReceive(&SPID2, 3, rxbuf); while(((SPI2->SR & SPI_SR_TXE) == 0) || ((SPI2->SR & SPI_SR_BSY) != 0)); //palSetPad(GPIOB, 12); spiUnselect(&SPID2); static uint16_t value = 0; value = rxbuf[1] << 8 | rxbuf[2]; //test_println((char*)value); return value; } /* if not available, just ignore the argument and return */ static inline uint16_t gdisp_lld_backlight(uint8_t percentage) { //pwmEnableChannel(&PWMD4, 1, percentage); } #endif /* GDISP_LLD_BOARD_H */ /** @} */ gfxconf.h /** * This file has a different license to the rest of the GFX system. * You can copy, modify and distribute this file as you see fit. * You do not need to publish your source modifications to this file. * The only thing you are not permitted to do is to relicense it * under a different license. */ /** * Copy this file into your project directory and rename it as gfxconf.h * Edit your copy to turn on the GFX features you want to use. */ #ifndef _GFXCONF_H #define _GFXCONF_H #define GFX_USE_OS_CHIBIOS TRUE /* GFX subsystems to turn on */ #define GFX_USE_GDISP TRUE #define GFX_USE_TDISP FALSE #define GFX_USE_GWIN FALSE #define GFX_USE_GEVENT FALSE #define GFX_USE_GTIMER FALSE #define GFX_USE_GINPUT FALSE #define GFX_USE_GADC FALSE #define GFX_USE_GAUDIN FALSE #define GFX_USE_GAUDOUT FALSE #define GFX_USE_GMISC FALSE /* Features for the GDISP subsystem */ #define GDISP_NEED_VALIDATION TRUE #define GDISP_NEED_CLIP TRUE #define GDISP_NEED_TEXT TRUE #define GDISP_NEED_CIRCLE TRUE #define GDISP_NEED_ELLIPSE TRUE #define GDISP_NEED_ARC FALSE #define GDISP_NEED_CONVEX_POLYGON FALSE #define GDISP_NEED_SCROLL FALSE #define GDISP_NEED_PIXELREAD FALSE #define GDISP_NEED_CONTROL FALSE #define GDISP_NEED_QUERY FALSE #define GDISP_NEED_IMAGE FALSE #define GDISP_NEED_MULTITHREAD FALSE #define GDISP_NEED_ASYNC FALSE #define GDISP_NEED_MSGAPI FALSE /* GDISP - builtin fonts */ #define GDISP_INCLUDE_FONT_SMALL FALSE #define GDISP_INCLUDE_FONT_LARGER FALSE #define GDISP_INCLUDE_FONT_UI1 FALSE #define GDISP_INCLUDE_FONT_UI2 TRUE #define GDISP_INCLUDE_FONT_LARGENUMBERS FALSE /* GDISP image decoders */ #define GDISP_NEED_IMAGE_NATIVE FALSE #define GDISP_NEED_IMAGE_GIF FALSE #define GDISP_NEED_IMAGE_BMP FALSE #define GDISP_NEED_IMAGE_JPG FALSE #define GDISP_NEED_IMAGE_PNG FALSE #define GDISP_NEED_IMAGE_ACCOUNTING FALSE /* Optional image support that can be turned off */ /* #define GDISP_NEED_IMAGE_BMP_1 TRUE #define GDISP_NEED_IMAGE_BMP_4 TRUE #define GDISP_NEED_IMAGE_BMP_4_RLE TRUE #define GDISP_NEED_IMAGE_BMP_8 TRUE #define GDISP_NEED_IMAGE_BMP_8_RLE TRUE #define GDISP_NEED_IMAGE_BMP_16 TRUE #define GDISP_NEED_IMAGE_BMP_24 TRUE #define GDISP_NEED_IMAGE_BMP_32 TRUE */ /* Features for the TDISP subsystem. */ #define TDISP_NEED_MULTITHREAD FALSE /* Features for the GWIN subsystem. */ #define GWIN_NEED_BUTTON FALSE #define GWIN_NEED_CONSOLE FALSE #define GWIN_NEED_GRAPH FALSE #define GWIN_NEED_SLIDER FALSE /* Features for the GEVENT subsystem. */ #define GEVENT_ASSERT_NO_RESOURCE FALSE /* Features for the GTIMER subsystem. */ /* NONE */ /* Features for the GINPUT subsystem. */ #define GINPUT_NEED_MOUSE FALSE #define GINPUT_NEED_KEYBOARD FALSE #define GINPUT_NEED_TOGGLE FALSE #define GINPUT_NEED_DIAL FALSE /* Features for the GADC subsystem. */ /* NONE */ /* Features for the GAUDIN subsystem. */ /* NONE */ /* Features for the GAUDOUT subsystem. */ /* NONE */ /* Features for the GMISC subsystem. */ #define GMISC_NEED_ARRAYOPS FALSE /* Optional Parameters for various subsystems */ /* #define GDISP_MAX_FONT_HEIGHT 16 #define GEVENT_MAXIMUM_SIZE 32 #define GEVENT_MAX_SOURCE_LISTENERS 32 #define GTIMER_THREAD_WORKAREA_SIZE 512 #define GADC_MAX_LOWSPEED_DEVICES 4 #define GWIN_BUTTON_LAZY_RELEASE FALSE */ /* Optional Low Level Driver Definitions */ #define GDISP_USE__BOARD TRUE #define GDISP_SCREEN_WIDTH 320 #define GDISP_SCREEN_HEIGHT 240 #define GDISP_USE_FSMC #define GDISP_USE_GPIO #define TDISP_COLUMNS 16 #define TDISP_ROWS 2 #define GDISP_THREAD_CHIBIOS TRUE #endif /* _GFXCONF_H */ Thanks a lot, David
