Minor updates the QMC5883L driver, implemented the softreset function for the BMP280 sensor and wrote the driver for the CST816D touch screen ic.

src/W800 SDK v1.00.08/app/app_drivers/i2c/BMP280.c

@@ -4,7 +4,7 @@
 #include "wm_osal.h"
 #include "FreeRTOS.h"
 
-typedef struct
+typedef struct BMP280_calibration_data
 {
     uint16_t dig_T1;
     int16_t dig_T2;
@@ -19,9 +19,9 @@ typedef struct
     int16_t dig_P8;
     int16_t dig_P9;
 
-} BMP280_calibration_data;
+} BMP280_calibration_data_t;
 
-static BMP280_calibration_data _calibration_data = {0};
+static BMP280_calibration_data_t _calibration_data = {0};
 static BMP280_Mode_e _mode;
 static int32_t t_fine = 0;
 
@@ -141,5 +141,5 @@ float BMP280_get_temperature(void)
 
 bool BMP280_software_reset(void)
 {
-    return false;
+    return i2c_write_reg(BMP280_I2C_ADDR, BMP280_RESET, BMP280_RESET_CODE);
 }

src/W800 SDK v1.00.08/app/app_drivers/i2c/BMP280.h

@@ -7,6 +7,8 @@
 /* Device ID */
 #define BMP280_ID 0x58
 
+#define BMP280_RESET_CODE 0xB6
+
 /* Device registers list */
 #define BMP280_TEMP_XLSB    0xFC
 #define BMP280_TEMP_LSB     0xFB
@@ -37,14 +39,14 @@
 /* Field masks */
 
 /* Configuration enumerations */
-typedef enum
+typedef enum BMP280_Mode
 {
     BMP280_Sleep = 0,
     BMP280_Forced = 1,
     BMP280_Normal = 3,
 } BMP280_Mode_e;
 
-typedef enum
+typedef enum BMP280_Oversampling
 {
     BMP280_Oversampling_Skipped = 0,
     BMP280_Oversampling_x1 = 1,
@@ -54,7 +56,7 @@ typedef enum
     BMP280_Oversampling_x16 = 5,
 } BMP280_Oversampling_e;
 
-typedef enum
+typedef enum BMP280_Filter
 {
     BMP280_Filter_OFF = 0,
     BMP280_Filter_x2 = 1,
@@ -63,7 +65,7 @@ typedef enum
     BMP280_Filter_x16 = 4,
 } BMP280_Filter_e;
 
-typedef enum
+typedef enum BMP280_Standby_Duration
 {
     BMP280_Standby_0_5MS = 0,
     BMP280_Standby_62_5MS = 1,
@@ -75,8 +77,6 @@ typedef enum
     BMP280_Standby_4000MS = 7,
 } BMP280_Standby_Duration_e;
 
-
-
 bool BMP280_init(void);
 
 bool BMP280_configure(BMP280_Mode_e mode, BMP280_Oversampling_e temperature_oversampling, BMP280_Oversampling_e pressure_oversampling, BMP280_Filter_e filter, BMP280_Standby_Duration_e standby_duration);
@@ -85,6 +85,8 @@ bool BMP280_trigger_measurement(void);
 
 float BMP280_get_temperature(void);
 
+float BMP280_get_pressure(void);
+
 bool BMP280_software_reset(void);
 
 #endif //BMP280_H

src/W800 SDK v1.00.08/app/app_drivers/i2c/CST816D.c

@@ -0,0 +1,24 @@
+#include "i2c.h"
+#include "CST816D.h"
+
+bool CST816D_read_touch_event(CST816D_Touch_Data_t * const touch_data)
+{
+    if(!touch_data) return false;
+
+    uint8_t data[7];
+    // Let's do an auto inc read of 7 bytes
+    if(i2c_read(CST816D_I2C_ADDR, CST816D_00, data, sizeof data))
+    {
+        touch_data->touch_x = ((data[3] & 0x0F) << 8) | data[4];
+        touch_data->touch_y = ((data[5] & 0x0F) << 8) | data[6];
+        touch_data->id = data[5] >> 4;
+        touch_data->touch_points = data[2] & 0x0F;
+        touch_data->gesture = data[1];
+        touch_data->event = data[3] >> 6;
+        touch_data->isValid = true;
+        return true;
+    }
+    
+    touch_data->isValid = false;
+    return false;
+}

src/W800 SDK v1.00.08/app/app_drivers/i2c/CST816D.c.bck

@@ -1 +0,0 @@
-

src/W800 SDK v1.00.08/app/app_drivers/i2c/CST816D.h

@@ -0,0 +1,59 @@
+#ifndef CST816D_H
+#define CST816D_H
+
+/* Device i2c address */
+#define CST816D_I2C_ADDR 0x15
+
+/* Device registers list */
+
+#define CST816D_00 0x00
+#define CST816D_GESTURE 0x01
+#define CST816D_TOUCH_POINTS 0x02
+#define CST816D_TOUCH_X_MSB 0x03
+#define CST816D_TOUCH_X_LSB 0x04
+#define CST816D_TOUCH_Y_MSB_AND_ID 0x05
+#define CST816D_TOUCH_Y_LSB 0x06
+
+typedef enum CST816D_Gesture
+{
+    CST816D_Gesture_None = 0,
+    CST816D_Gesture_Swipe_Down,
+    CST816D_Gesture_Swipe_Up,
+    CST816D_Gesture_Swipe_Left,
+    CST816D_Gesture_Swipe_Right,
+    CST816D_Gesture_Tap,
+    CST816D_Gesture_Double_Tap = 11,
+    CST816D_Gesture_Long_Press,
+}  __attribute__((packed)) CST816D_Gesture_e;
+
+typedef enum CST816D_Event
+{
+    CST816D_Event_Touch_Down = 0,
+    CST816D_Event_Released,
+    CST816D_Event_Pressed,
+} __attribute__((packed)) CST816D_Event_e;
+
+typedef struct CST816D_Touch_Data
+{
+    uint16_t touch_x;
+    uint16_t touch_y;
+    uint8_t id : 4;
+    uint8_t touch_points : 4;
+    CST816D_Gesture_e gesture;
+    bool isValid : 1;
+    CST816D_Event_e event : 2;
+} CST816D_Touch_Data_t;
+
+/**
+ * @brief Reads the incoming touch event data which contains the x and y 
+ * position of the touch as well as various other information.
+ * /!\ This function has to be called in the IRQ ISR because
+ * the chip can only be read during a short time after the it triggered the interrupt !
+ * 
+ * @param touch_data a pointer to a user allocated structure of type CST816D_Touch_Data_t
+ * @return true on success, ie successfully read the data from the chip
+ * @return false otherwise
+ */
+bool CST816D_read_touch_event(CST816D_Touch_Data_t * const touch_data);
+
+#endif //CST816D_H

src/W800 SDK v1.00.08/app/app_drivers/i2c/CST816D.h.bck

@@ -1,6 +0,0 @@
-#ifndef CST816D_H
-#define CST816D_H
-
-
-
-#endif //CST816D_H

src/W800 SDK v1.00.08/app/app_drivers/i2c/QMC5883L.h

@@ -19,13 +19,13 @@
 #define QMC5883L_DOR_BIT 0x04
 
 /* Configuration enumerations */
-typedef enum
+typedef enum QMC5883L_Mode_Control
 {
     Standby = 0,
     Continuous = 1,
 } QMC5883L_Mode_Control_e;
 
-typedef enum
+typedef enum QMC5883L_Output_Data_Rate
 {
     ODR_10HZ = 0,
     ODR_50HZ = 1,
@@ -33,13 +33,13 @@ typedef enum
     ODR_200HZ = 3,
 } QMC5883L_Output_Data_Rate_e;
 
-typedef enum
+typedef enum QMC5883L_Full_Scale
 {
     FS_2G = 0,
     FS_8G = 1,
 } QMC5883L_Full_Scale_e;
 
-typedef enum
+typedef enum QMC5883L_Over_Sample_Ratio
 {
     OSR_512 = 0,
     OSR_256 = 1,
@@ -48,14 +48,14 @@ typedef enum
 } QMC5883L_Over_Sample_Ratio_e;
 
 
-typedef struct
+typedef struct QMC5883L_MData
 {
     int16_t MFieldX;
     int16_t MFieldY;
     int16_t MFieldZ;
 } QMC5883L_MData_t;
 
-typedef struct
+typedef struct QMC5883L_MData_calibrated
 {
     int16_t MFieldX;
     int16_t MFieldY;