Diff: main.cpp

Revision:

7:fabc8bd0dbcd

Parent:

5:27071c2166bb

--- a/main.cpp	Tue Feb 05 13:31:14 2019 +0000
+++ b/main.cpp	Tue Dec 22 19:23:34 2020 +0000
@@ -3,18 +3,39 @@
  */
 
 #include "mbed.h"
+#include "LIS3DH.h"
 
-/* 
+
+#define MOSI PA_7
+#define MISO PA_6
+#define CS PA_4
+#define SCLK PA_5
+
+
+
+
+LIS3DH      acc(MOSI, MISO, SCLK, CS, LIS3DH_DR_NR_LP_50HZ, LIS3DH_FS_2G);
+
+/*
  * STM32F103x data-sheet:
- * 5.3.19 Temperature sensor characteristics 
+ * 5.3.19 Temperature sensor characteristics
  * Table 50. TS characteristics, Page 80
  */
-const float         AVG_SLOPE   = 4.3E-03;      // slope (gradient) of temperature line function  [V/°C]
-const float         V25         = 1.43;         // sensor's output voltage at 25°C [V]
-const float         ADC_TO_VOLT = 3.3 / 4096;   // conversion coefficient of digital value to voltage [V] 
-                                                // when using 3.3V ref. voltage at 12-bit resolution (2^12 = 4096)
+const float         AVG_SLOPE   = 10E-03;      // slope (gradient) of temperature line function  [V/°C]
+const float         V25         = 0.75;         // sensor's output voltage at 25°C [V]
+const float         ADC_TO_VOLT = 3.3 / 4096;   // conversion coefficient of digital value to voltage [V]
+// when using 3.3V ref. voltage at 12-bit resolution (2^12 = 4096)
+
+
 
-Serial              pc(USBTX, USBRX);
+float accX = 0;
+float accY = 0;
+float accZ = 0;
+
+
+
+
+Serial              pc(PA_9, PA_10);
 DigitalOut          led(PC_13);
 ADC_HandleTypeDef   hadc1;                      // ADC handle
 uint16_t            adcValue;                   // digital value of sensor
@@ -24,6 +45,8 @@
 /* ADC1 init function */
 void MX_ADC1_Init(void)
 {
+    pc.baud(115200);
+    pc.format(8,SerialBase::Odd,1);
     ADC_ChannelConfTypeDef  sConfig;
 
     /**Common config
@@ -39,18 +62,38 @@
 
     /**Configure Regular Channel
         */
-    sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
+    sConfig.Channel = 9;
     sConfig.Rank = 1;
     sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
     HAL_ADC_ConfigChannel(&hadc1, &sConfig);
 }
 
+
+
+// When characteristic input changing
+void Accupdate()
+{
+
+    accX = float(short((acc.read_reg(LIS3DH_OUT_X_H) << 8) | acc.read_reg(LIS3DH_OUT_X_L))) * 0.001F / 15;
+    accY = float(short((acc.read_reg(LIS3DH_OUT_Y_H) << 8) | acc.read_reg(LIS3DH_OUT_Y_L))) * 0.001F / 15;
+    accZ = float(short((acc.read_reg(LIS3DH_OUT_Z_H) << 8) | acc.read_reg(LIS3DH_OUT_Z_L))) * 0.001F / 15;
+
+
+    pc.printf("X acceleration = ");
+    pc.printf("%5.2f",accX);
+    pc.printf("Y acceleration = ");
+    pc.printf("%5.2f",accY);
+    pc.printf("Z acceleration = ");
+    pc.printf("%5.2f",accZ);
+}
+
+
 int main()
 {
     MX_ADC1_Init();                                                 // initialize AD convertor
     while(HAL_ADCEx_Calibration_Start(&hadc1) != HAL_OK);           // calibrate AD convertor
 
-    while(1) {        
+    while(1) {
         HAL_ADC_Start(&hadc1);                                      // start analog to digital conversion
         while(HAL_ADC_PollForConversion(&hadc1, 1000000) != HAL_OK);// wait for completing the conversion
         adcValue = HAL_ADC_GetValue(&hadc1);                        // read sensor's digital value
@@ -61,9 +104,9 @@
          * Reading the temperature, Page 235
          * Temperature (in °C) = {(V25 - Vsense) / Avg_Slope} + 25
          */
-        temp = (V25 - vSense) / AVG_SLOPE + 25.0f;                  // convert sensor's output voltage to temperature [°C]
-        pc.printf("temp = %3.1f%cC\n", temp, 176);                  // display chip's temperature [°C]
-        led = !led;
+        temp = (vSense - V25) / AVG_SLOPE + 25.0f;                  // convert sensor's output voltage to temperature [°C]
+        pc.printf("temp = %3.1f%cC, voltage = %f\n", temp, 176, vSense);                  // display chip's temperature [°C]
+        Accupdate();
         wait_ms(1000);
-   }
+    }
 }