28d663f6b6
* Move disp_spi.c and tp_spi.c to lv_port * Move esp_lcd_backlight to lv_port * Move disp_spi.h and tp_spi.h to lv_port
110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/**
|
|
* @file tp_spi.c
|
|
*
|
|
*/
|
|
|
|
/*********************
|
|
* INCLUDES
|
|
*********************/
|
|
#include "tp_spi.h"
|
|
#include "touch_driver.h"
|
|
#include "esp_system.h"
|
|
#include "driver/gpio.h"
|
|
#include "driver/spi_master.h"
|
|
#include <string.h>
|
|
|
|
#include "../lvgl_helpers.h"
|
|
#include "../lvgl_spi_conf.h"
|
|
|
|
/*********************
|
|
* DEFINES
|
|
*********************/
|
|
|
|
/**********************
|
|
* TYPEDEFS
|
|
**********************/
|
|
|
|
|
|
/**********************
|
|
* STATIC PROTOTYPES
|
|
**********************/
|
|
static spi_device_handle_t spi;
|
|
|
|
/**********************
|
|
* STATIC VARIABLES
|
|
**********************/
|
|
|
|
/**********************
|
|
* MACROS
|
|
**********************/
|
|
|
|
/**********************
|
|
* GLOBAL FUNCTIONS
|
|
**********************/
|
|
void tp_spi_add_device_config(spi_host_device_t host, spi_device_interface_config_t *devcfg)
|
|
{
|
|
esp_err_t ret=spi_bus_add_device(host, devcfg, &spi);
|
|
assert(ret==ESP_OK);
|
|
}
|
|
|
|
void tp_spi_add_device(spi_host_device_t host)
|
|
{
|
|
spi_device_interface_config_t devcfg={
|
|
.clock_speed_hz = SPI_TOUCH_CLOCK_SPEED_HZ,
|
|
.mode = SPI_TOUCH_SPI_MODE,
|
|
.spics_io_num=TP_SPI_CS, //CS pin
|
|
.queue_size=1,
|
|
.pre_cb=NULL,
|
|
.post_cb=NULL,
|
|
.command_bits = 8,
|
|
.address_bits = 0,
|
|
.dummy_bits = 0,
|
|
.flags = SPI_DEVICE_HALFDUPLEX | SPI_DEVICE_NO_DUMMY,
|
|
};
|
|
|
|
//Attach the Touch controller to the SPI bus
|
|
tp_spi_add_device_config(host, &devcfg);
|
|
}
|
|
|
|
void tp_spi_xchg(uint8_t* data_send, uint8_t* data_recv, uint8_t byte_count)
|
|
{
|
|
spi_transaction_t t = {
|
|
.length = byte_count * 8, // SPI transaction length is in bits
|
|
.tx_buffer = data_send,
|
|
.rx_buffer = data_recv};
|
|
|
|
esp_err_t ret = spi_device_transmit(spi, &t);
|
|
assert(ret == ESP_OK);
|
|
}
|
|
|
|
void tp_spi_write_reg(uint8_t* data, uint8_t byte_count)
|
|
{
|
|
spi_transaction_t t = {
|
|
.length = byte_count * 8,
|
|
.tx_buffer = data,
|
|
.flags = 0
|
|
};
|
|
|
|
esp_err_t ret = spi_device_transmit(spi, &t);
|
|
assert(ret == ESP_OK);
|
|
}
|
|
|
|
void tp_spi_read_reg(uint8_t reg, uint8_t* data, uint8_t byte_count)
|
|
{
|
|
spi_transaction_t t = {
|
|
.length = (byte_count + sizeof(reg)) * 8,
|
|
.rxlength = byte_count * 8,
|
|
.cmd = reg,
|
|
.rx_buffer = data,
|
|
.flags = 0
|
|
};
|
|
|
|
// Read - send first byte as command
|
|
esp_err_t ret = spi_device_transmit(spi, &t);
|
|
assert(ret == ESP_OK);
|
|
}
|
|
|
|
/**********************
|
|
* STATIC FUNCTIONS
|
|
**********************/
|