1 | /*
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2 | * adc_test.c
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3 | *
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4 | * Created: 18.02.2014
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5 | * Author: Nicolas
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6 | */
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7 |
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8 | #include <stdio.h>
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9 | #include "../../ioMapping.h"
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10 | #include "../src_encoder/key.h"
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11 | #include "../src_avrcom/pgmspace.h"
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12 | #include "../src_avrcom/delay.h"
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13 | #include "../src_glcd/glcd_ks0108.h"
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14 |
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15 | #ifdef STM32F10x
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16 | #include "stm32f10x_adc.h"
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17 | #include "stm32f10x_gpio.h"
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18 | #include "stm32f10x_rcc.h"
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19 | #elif defined(STM32F4xx)
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20 | #error "only for STM32F10x implemented yet"
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21 | #else
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22 | #error "unknown MCU"
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23 | #endif
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24 |
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25 |
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26 | //#define POTI_UPDWN_GPIO GPIOC
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27 | //#define POTI_UPDWN_Pin GPIO_Pin_3
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28 | //#define POTI_UPDWM_ADCCH ADC_Channel_13
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29 |
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30 |
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31 | void adc_calib(ADC_TypeDef *ADCx) {
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32 | ADC_Cmd(ADCx,ENABLE);
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33 | ADC_ResetCalibration(ADCx);
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34 | while(ADC_GetResetCalibrationStatus(ADCx));
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35 | ADC_StartCalibration(ADCx);
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36 | while(ADC_GetCalibrationStatus(ADCx));
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37 | ADC_SoftwareStartConvCmd(ADCx,ENABLE);
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38 | }
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39 |
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40 |
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41 |
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42 | /* Suchen von I2C-Devices und Darstellen auf LCD */
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43 | void adc_test(void) {
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44 | ADC_InitTypeDef ADC_InitStructure;
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45 | GPIO_InitTypeDef GPIO_InitStructure;
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46 | uint16_t value;
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47 |
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48 | // ADC-Takt max. 14MHz, hier 72MHz / 6 = 12MHz
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49 | RCC_ADCCLKConfig(RCC_PCLK2_Div6);
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50 |
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51 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
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52 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_ADC1,ENABLE);
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53 |
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54 | GPIO_InitStructure.GPIO_Pin = POTI_UPDWN_Pin;
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55 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
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56 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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57 | GPIO_Init(POTI_UPDWN_GPIO,&GPIO_InitStructure);
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58 |
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59 | ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
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60 | ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
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61 | ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigInjecConv_None;
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62 | ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
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63 | ADC_InitStructure.ADC_NbrOfChannel = 1;
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64 | ADC_InitStructure.ADC_ScanConvMode = DISABLE;
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65 | ADC_Init(ADC1,&ADC_InitStructure);
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66 |
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67 | ADC_RegularChannelConfig(ADC1,POTI_UPDWM_ADCCH,1,ADC_SampleTime_1Cycles5);
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68 |
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69 | ADC_Cmd(ADC1,ENABLE);
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70 |
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71 | ADC_SoftwareStartConvCmd(ADC1,ENABLE);
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72 |
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73 | adc_calib(ADC1);
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74 |
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75 | printf_P(PSTR("\fADC Test Poti 1 \n\a"));
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76 |
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77 | // Kann als Dauerschleife angesehen werden
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78 | while(!key_getstroke()) {
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79 |
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80 | value = ADC_GetConversionValue(ADC1);
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81 | glcd_setpos(128);
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82 | printf_P(PSTR("val=%6i\a"),value);
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83 | delay_us(100);
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84 | }
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85 | printf_P(PSTR("\b\b\b\bdone. \a"));
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86 |
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87 |
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88 | return;
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89 |
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90 | error:
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91 |
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92 | printf_P(PSTR("\nError \a"));
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93 | while(!key_getstroke());
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94 | } // end function
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