Move drivers from the lv_port_esp32 to here

2020-12-17 00:02:55 -06:00 · 2020-12-17 00:02:55 -06:00 · 08384030b0
commit 08384030b0
parent 5a32d98f83
69 changed files with 14977 additions and 2 deletions
--- a/lvgl_touch/ra8875_touch.c
+++ b/lvgl_touch/ra8875_touch.c
@ -0,0 +1,181 @@
+/**
+ * @file RA8875_TOUCH.c
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include <stddef.h>
+
+#include "ra8875_touch.h"
+
+#include "../lvgl_tft/ra8875.h"
+
+#ifndef CONFIG_LV_TFT_DISPLAY_CONTROLLER_RA8875
+    #error "Display controller must be RA8875"
+#endif
+
+/*********************
+ *      DEFINES
+ *********************/
+#define DEBUG false
+#define TAG "RA8875-Touch"
+
+#define DIV_ROUND_UP(n, d) (((n)+(d)-1)/(d))
+
+#define INTC2_TP_INT (0x04)
+
+#define TPCR0_ADC_TIMING ((CONFIG_LV_TOUCH_RA8875_SAMPLE_TIME << 4) | CONFIG_LV_TOUCH_RA8875_ADC_CLOCK)
+#if LVGL_TOUCH_RA8875_WAKEUP_ENABLE
+    #define TPCR0_VAL (0x08 | TPCR0_ADC_TIMING)
+#else
+    #define TPCR0_VAL (TPCR0_ADC_TIMING)
+#endif
+
+#if LVGL_TOUCH_RA8875_EXTERNAL_VREF
+    #if LVGL_TOUCH_RA8875_DEBOUNCE_ENABLE
+        #define TPCR1_VAL (0x24)
+    #else
+        #define TPCR1_VAL (0x20)
+    #endif
+#else
+    #if LVGL_TOUCH_RA8875_DEBOUNCE_ENABLE
+        #define TPCR1_VAL (0x04)
+    #else
+        #define TPCR1_VAL (0x00)
+    #endif
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void ra8875_corr(int * x, int * y);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void ra8875_touch_init(void)
+{
+    struct {
+        uint8_t cmd;                                       // Register address of command
+        uint8_t data;                                      // Value to write to register
+    } init_cmds[] = {
+        {RA8875_REG_TPCR0, TPCR0_VAL},                     // Touch Panel Control Register 0 (TPCR0)
+        {RA8875_REG_TPCR1, TPCR1_VAL},                     // Touch Panel Control Register 1 (TPCR1)
+    };
+    #define INIT_CMDS_SIZE (sizeof(init_cmds)/sizeof(init_cmds[0]))
+
+    ESP_LOGI(TAG, "Initializing RA8875 Touch...");
+
+    // Send all the commands
+    for (unsigned int i = 0; i < INIT_CMDS_SIZE; i++) {
+        ra8875_write_cmd(init_cmds[i].cmd, init_cmds[i].data);
+    }
+    ra8875_touch_enable(true);
+}
+
+void ra8875_touch_enable(bool enable)
+{
+    ESP_LOGI(TAG, "%s touch.", enable ? "Enabling" : "Disabling");
+    uint8_t val = enable ? (0x80 | TPCR0_VAL) : (TPCR0_VAL);
+    ra8875_write_cmd(RA8875_REG_TPCR0, val);
+}
+
+/**
+ * Get the current position and state of the touchscreen
+ * @param data store the read data here
+ * @return false: because no more data to be read
+ */
+bool ra8875_touch_read(lv_indev_drv_t * drv, lv_indev_data_t * data)
+{
+    static int x = 0;
+    static int y = 0;
+
+    int intr = ra8875_read_cmd(RA8875_REG_INTC2);          // Interrupt Control Register2 (INTC2)
+
+    data->state = (intr & INTC2_TP_INT) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
+
+    if (data->state == LV_INDEV_STATE_PR) {
+        x = ra8875_read_cmd(RA8875_REG_TPXH);              // Touch Panel X High Byte Data Register (TPXH)
+        y = ra8875_read_cmd(RA8875_REG_TPYH);              // Touch Panel Y High Byte Data Register (TPYH)
+        int xy = ra8875_read_cmd(RA8875_REG_TPXYL);        // Touch Panel X/Y Low Byte Data Register (TPXYL)
+
+        x = (x << 2) | (xy & 0x03);
+        y = (y << 2) | ((xy >> 2) & 0x03);
+
+#if DEBUG
+        ESP_LOGI(TAG, "Touch Poll Raw: %d,%d", x, y);
+#endif
+
+        // Convert to display coordinates
+        ra8875_corr(&x, &y);
+
+        // Clear interrupt
+        ra8875_write_cmd(RA8875_REG_INTC2, INTC2_TP_INT);  // Interrupt Control Register2 (INTC2)
+    }
+
+    data->point.x = x;
+    data->point.y = y;
+
+#if DEBUG
+        ESP_LOGI(TAG, "Touch Poll - Event: %d; %d,%d", data->state, data->point.x, data->point.y);
+#endif
+
+    return false;
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void ra8875_corr(int * x, int * y)
+{
+#if RA8875_XY_SWAP != 0
+    int tmp = *x;
+    *x = *y;
+    *y = tmp;
+#endif
+
+    if ((*x) <= RA8875_X_MIN) {
+        (*x) = 0;
+    } else if ((*x) >= RA8875_X_MAX) {
+        (*x) = LV_HOR_RES-1;
+    } else {
+        (*x) = (((*x) - RA8875_X_MIN) * (LV_HOR_RES-1)) / (RA8875_X_MAX - RA8875_X_MIN);
+    }
+
+    if ((*y) <= RA8875_Y_MIN) {
+        (*y) = 0;
+    } else if ((*y) >= RA8875_Y_MAX) {
+        (*y) = LV_VER_RES-1;
+    } else {
+        (*y) = (((*y) - RA8875_Y_MIN) * (LV_VER_RES-1)) / (RA8875_Y_MAX - RA8875_Y_MIN);
+    }
+
+#if RA8875_X_INV != 0
+    (*x) = (LV_HOR_RES-1) - (*x);
+#endif
+
+#if RA8875_Y_INV != 0
+    (*y) = (LV_VER_RES-1) - (*y);
+#endif
+}