diff options
Diffstat (limited to 'drivers/gdisp/HX8347D/gdisp_lld_board_st_stm32f4_discovery.h')
| -rw-r--r-- | drivers/gdisp/HX8347D/gdisp_lld_board_st_stm32f4_discovery.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/drivers/gdisp/HX8347D/gdisp_lld_board_st_stm32f4_discovery.h b/drivers/gdisp/HX8347D/gdisp_lld_board_st_stm32f4_discovery.h new file mode 100644 index 00000000..da078541 --- /dev/null +++ b/drivers/gdisp/HX8347D/gdisp_lld_board_st_stm32f4_discovery.h @@ -0,0 +1,202 @@ +/*
+ * This file is subject to the terms of the GFX License, v1.0. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ * http://chibios-gfx.com/license.html
+ */
+
+/**
+ * @file drivers/gdisp/HX8347D/gdisp_lld_board_embest_dmstf4bb.h
+ * @brief GDISP Graphic Driver subsystem board SPI interface for the HX8347D display.
+ *
+ * @addtogroup GDISP
+ * @{
+ */
+
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+#define SET_RST palSetPad(GPIOB, 8);
+#define CLR_RST palClearPad(GPIOB, 8);
+
+/* PWM configuration structure. We use timer 4 channel 2 (orange LED on board). */
+static const PWMConfig pwmcfg = {
+ 1000000, /* 1 MHz PWM clock frequency. */
+ 100, /* PWM period is 100 cycles. */
+ NULL,
+ {
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL},
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL},
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL},
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL}
+ },
+ 0
+};
+
+/*
+ * SPI1 configuration structure.
+ * Speed 42MHz, CPHA=0, CPOL=0, 8bits frames, MSb transmitted first.
+ * The slave select line is the pin 4 on the port GPIOA.
+ */
+static const SPIConfig spi1cfg1 = {
+ NULL,
+ /* HW dependent part.*/
+ GPIOA,
+ 4,
+ 0 //SPI_CR1_BR_0
+};
+
+/*
+ * SPI1 configuration structure.
+ * Speed 42MHz, CPHA=0, CPOL=0, 16bits frames, MSb transmitted first.
+ * The slave select line is the pin 4 on the port GPIOA.
+ */
+static const SPIConfig spi1cfg2 = {
+ NULL,
+ /* HW dependent part.*/
+ GPIOA,
+ 4,
+ SPI_CR1_DFF //SPI_CR1_BR_0
+};
+
+/**
+ * @brief Initialise the board for the display.
+ * @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins
+ *
+ * @notapi
+ */
+static inline void init_board(void) {
+
+ /* Display backlight control */
+ /* TIM4 is an alternate function 2 (AF2) */
+ pwmStart(&PWMD4, &pwmcfg);
+ palSetPadMode(GPIOD, 13, PAL_MODE_ALTERNATE(2));
+ pwmEnableChannel(&PWMD4, 1, 100);
+
+ palSetPadMode(GPIOB, 8, PAL_MODE_OUTPUT_PUSHPULL |
+ PAL_STM32_OSPEED_HIGHEST); /* RST */
+ palSetPadMode(GPIOB, 9, PAL_MODE_OUTPUT_PUSHPULL |
+ PAL_STM32_OSPEED_HIGHEST); /* RS */
+ /*
+ * Initializes the SPI driver 1. The SPI1 signals are routed as follow:
+ * PB12 - NSS.
+ * PB13 - SCK.
+ * PB14 - MISO.
+ * PB15 - MOSI.
+ */
+ spiStart(&SPID1, &spi1cfg1);
+ palSetPad(GPIOA, 4);
+ palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL |
+ PAL_STM32_OSPEED_HIGHEST); /* NSS. */
+ palSetPadMode(GPIOA, 5, PAL_MODE_ALTERNATE(5) |
+ PAL_STM32_OSPEED_HIGHEST); /* SCK. */
+ palSetPadMode(GPIOA, 6, PAL_MODE_ALTERNATE(5)); /* MISO. */
+ palSetPadMode(GPIOA, 7, PAL_MODE_ALTERNATE(5) |
+ PAL_STM32_OSPEED_HIGHEST); /* MOSI. */
+
+}
+
+/**
+ * @brief Set or clear the lcd reset pin.
+ *
+ * @param[in] state TRUE = lcd in reset, FALSE = normal operation
+ *
+ * @notapi
+ */
+static inline void setpin_reset(bool_t state) {
+ if (state) {
+ CLR_RST;
+ } else {
+ SET_RST;
+ }
+}
+
+/**
+ * @brief Set the lcd back-light level.
+ *
+ * @param[in] percent 0 to 100%
+ *
+ * @notapi
+ */
+static inline void set_backlight(uint8_t percent) {
+ pwmEnableChannel(&PWMD4, 1, percent);
+}
+
+/**
+ * @brief Take exclusive control of the bus
+ * @note Not needed, not implemented
+ *
+ * @notapi
+ */
+static inline void acquire_bus(void) {
+ spiAcquireBus(&SPID1);
+}
+
+/**
+ * @brief Release exclusive control of the bus
+ * @note Not needed, not implemented
+ *
+ * @notapi
+ */
+static inline void release_bus(void) {
+ spiReleaseBus(&SPID1);
+}
+
+/**
+ * @brief Send data to the index register.
+ *
+ * @param[in] index The index register to set
+ *
+ * @notapi
+ */
+static inline void write_index(uint8_t cmd) {
+ palClearPad(GPIOB, 9);
+ palClearPad(GPIOA, 4);
+ while((SPI1->SR & SPI_SR_TXE) == 0);
+ SPI1->DR = cmd;
+ while(((SPI1->SR & SPI_SR_TXE) == 0) || ((SPI1->SR & SPI_SR_BSY) != 0));
+ palSetPad(GPIOB, 9);
+}
+
+/**
+ * @brief Send data to the lcd.
+ *
+ * @param[in] data The data to send
+ *
+ * @notapi
+ */
+static inline void write_data(uint8_t data) {
+ SPI1->DR = data;
+ while(((SPI1->SR & SPI_SR_TXE) == 0) || ((SPI1->SR & SPI_SR_BSY) != 0));
+ palSetPad(GPIOA, 4);
+}
+
+static inline void write_ram8(uint8_t data1, uint8_t data2) {
+ SPI1->DR = data1;
+ while((SPI1->SR & SPI_SR_TXE) == 0);
+ SPI1->DR = data2;
+ while(((SPI1->SR & SPI_SR_TXE) == 0) || ((SPI1->SR & SPI_SR_BSY) != 0));
+ palSetPad(GPIOA, 4);
+}
+
+static inline void write_ram16(uint16_t data) {
+ while((SPI1->SR & SPI_SR_TXE) == 0);
+ SPI1->DR = data;
+}
+
+#if GDISP_HARDWARE_READPIXEL || defined(__DOXYGEN__)
+/**
+ * @brief Read data from the lcd.
+ *
+ * @return The data from the lcd
+ * @note The chip select may need to be asserted/de-asserted
+ * around the actual spi read
+ *
+ * @notapi
+ */
+static inline uint16_t read_data(void) {
+}
+#endif
+
+#endif /* _GDISP_LLD_BOARD_H */
+/** @} */
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