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2.3 KiB

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