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test
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); - } + } }