122 lines
2.3 KiB
C
122 lines
2.3 KiB
C
#ifndef _GDISP_LLD_BOARD_H
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#define _GDISP_LLD_BOARD_H
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#include "nrf_gpio.h"
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#include "nrf_drv_spi.h"
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#include "app_util_platform.h"
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#define PIN_CS 29
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#define PIN_SCK 3
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#define PIN_MOSI 4
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#define PIN_DC 12
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#define PIN_RESET 11
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#define PIN_BUSY 27
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#define SPI_INSTANCE 0
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static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE);
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static GFXINLINE gBool init_board(GDisplay* g)
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{
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nrf_drv_spi_config_t spi_config;
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ret_code_t err = NRF_SUCCESS;
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(void)g;
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// Initialize RESET pin
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nrf_gpio_cfg_output(PIN_RESET);
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// Initialize RESET pin
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nrf_gpio_cfg_output(PIN_DC);
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// Initialize BUSY pin
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nrf_gpio_cfg_input(PIN_BUSY, NRF_GPIO_PIN_NOPULL);
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// Initialize RESET pin
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nrf_gpio_cfg_output(PIN_CS);
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// Initialize SPI
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spi_config.sck_pin = PIN_SCK;
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spi_config.mosi_pin = PIN_MOSI;
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spi_config.miso_pin = NRF_DRV_SPI_PIN_NOT_USED;
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spi_config.ss_pin = NRF_DRV_SPI_PIN_NOT_USED; // We have to control the CS line ourself for burst writes > 255 bytes
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spi_config.irq_priority = APP_IRQ_PRIORITY_LOW;
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spi_config.orc = 0xFF;
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spi_config.frequency = NRF_DRV_SPI_FREQ_4M;
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spi_config.mode = NRF_DRV_SPI_MODE_0;
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spi_config.bit_order = NRF_DRV_SPI_BIT_ORDER_MSB_FIRST;
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err = nrf_drv_spi_init(&spi, &spi_config, 0);
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if (err != NRF_SUCCESS) {
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return gFalse;
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}
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return gTrue;
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}
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static GFXINLINE void post_init_board(GDisplay* g)
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{
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(void)g;
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}
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static GFXINLINE void setpin_reset(GDisplay *g, gBool state)
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{
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(void)g;
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if (state) {
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nrf_gpio_pin_set(PIN_RESET);
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} else {
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nrf_gpio_pin_clear(PIN_RESET);
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}
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}
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static GFXINLINE gBool getpin_busy(GDisplay* g)
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{
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(void)g;
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if (nrf_gpio_pin_read(PIN_BUSY) == 1) {
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return gTrue;
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} else {
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return gFalse;
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}
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}
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static GFXINLINE void acquire_bus(GDisplay* g)
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{
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(void)g;
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nrf_gpio_pin_clear(PIN_CS);
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}
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static GFXINLINE void release_bus(GDisplay* g)
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{
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(void)g;
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nrf_gpio_pin_set(PIN_CS);
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}
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static GFXINLINE void write_cmd(GDisplay* g, gU8 cmd)
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{
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(void)g;
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nrf_gpio_pin_clear(PIN_DC);
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nrf_drv_spi_transfer(&spi, &cmd, 1, 0, 0);
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}
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static GFXINLINE void write_data(GDisplay* g, gU8 data)
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{
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(void)g;
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nrf_gpio_pin_set(PIN_DC);
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nrf_drv_spi_transfer(&spi, &data, 1, 0, 0);
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}
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static GFXINLINE void write_data_burst(GDisplay* g, gU8* data, gU8 length)
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{
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(void)g;
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nrf_gpio_pin_set(PIN_DC);
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nrf_drv_spi_transfer(&spi, data, length, 0, 0);
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}
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#endif /* _GDISP_LLD_BOARD_H */
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