Move drivers from the lv_port_esp32 to here

lvgl_touch/tp_spi.c

@@ -0,0 +1,109 @@
+/**
+ * @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
+ **********************/