Merge pull request #40 from badgeteam/bme680_stub

Add BME680 stub and update submodules

components/i2c-bme680/CMakeLists.txt

@@ -0,0 +1,5 @@
+idf_component_register(
+  SRCS "bme680.c"
+  INCLUDE_DIRS include
+  REQUIRES "bus-i2c"
+)

components/i2c-bme680/bme680.c

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2022 Nicolai Electronics
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <sdkconfig.h>
+#include <esp_log.h>
+#include <driver/gpio.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/semphr.h>
+#include <freertos/task.h>
+#include "bme680.h"
+#include "managed_i2c.h"
+
+static const char *TAG = "BME680";
+
+esp_err_t bme680_check_id(BME680* device) {
+    uint8_t chip_id;
+    esp_err_t res = i2c_read_reg(device->i2c_bus, device->i2c_address, BME680_REG_CHIP_ID, &chip_id, 1);
+    if (res != ESP_OK) return res;
+    if (chip_id != BME680_CHIP_ID) {
+        ESP_LOGE(TAG, "Unexpected chip id value 0x%02X, expected 0x%02X", chip_id, BME680_CHIP_ID);
+        return ESP_FAIL;
+    }
+    return ESP_OK;
+}
+
+esp_err_t bme680_reset(BME680* device) {
+    uint8_t value = 0xFF;
+    esp_err_t res = i2c_write_reg_n(device->i2c_bus, device->i2c_address, BME680_REG_RESET, &value, 1);
+    if (res != ESP_OK) return res;
+    return ESP_OK;
+}
+
+esp_err_t bme680_init(BME680* device) {
+    esp_err_t res = bme680_reset(device);
+    if (res != ESP_OK) return res;
+    vTaskDelay(100 / portTICK_PERIOD_MS);
+    res = bme680_check_id(device);
+    if (res != ESP_OK) return res;
+    return res;
+}
+
+esp_err_t bme680_deinit(BME680* device) {
+    return bme680_reset(device);
+}

components/i2c-bme680/include/bme680.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <esp_err.h>
+#include <stdint.h>
+
+#define BME680_REG_RESET   0xE0
+#define BME680_REG_CHIP_ID 0xD0
+
+#define BME680_CHIP_ID 0x61
+
+typedef struct BME680 {
+    int              i2c_bus;
+    int              i2c_address;
+} BME680;
+
+esp_err_t bme680_init(BME680* device);
+esp_err_t bme680_deinit(BME680* device);
+esp_err_t bme680_check_id(BME680* device);
+esp_err_t bme680_reset(BME680* device);

components/mch2022-bsp

@@ -1 +1 @@
-Subproject commit 4ba1bb512e096d6b9ed2e07142c69037cfcdfe3c
+Subproject commit aa0214c069b1b05a0392331c89dfa202a0fa61b1

components/spi-ice40

@@ -1 +1 @@
-Subproject commit a7a07046cd8748cb29725559a3f6ee095301521b
+Subproject commit 108625c65834d6cdfef60f4725be8c53c3ad6d61

components/spi-ili9341

@@ -1 +1 @@
-Subproject commit 8fe7ca9876e2afed472c5d01170d4e76acdf6399
+Subproject commit 62f7cef36fc12c626eca56764695673e15bcb539

main/main.c

@@ -686,6 +686,18 @@ void app_main(void) {
         esp_restart();
     }
 
+    if (bsp_bme680_init() != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to initialize the BME680 position sensor");
+        display_fatal_error(pax_buffer, ili9341, "Failed to initialize", "BME680 sensor error", "Check I2C bus", "Remove SAO and try again");
+        esp_restart();
+    }
+
+    BME680* bme680 = get_bme680();
+    if (bme680 == NULL) {
+        ESP_LOGE(TAG, "bme680 is NULL");
+        esp_restart();
+    }
+
     /* Start AppFS */
     res = appfs_init();
     if (res != ESP_OK) {