main.c

00001 #define USE_STM32L476G_DISCO_REVC
00002 #include "stm32l476g_discovery.h"
00003 #include "stm32l476g_discovery_glass_lcd.h"
00004 
00005 
00006 /************** TODO **********************
00007  - Find and fix bug in ADC initialization code
00008  - Perform actual measurement
00009  - Output actual calibrated temperature value (RTFM)
00010 */
00011 int main()
00012 {
00013     //Init and test LCD
00014     BSP_LCD_GLASS_Init();
00015     BSP_LCD_GLASS_DisplayBar(LCD_BAR_3);
00016     
00017     __HAL_RCC_ADC_CLK_ENABLE();
00018     __HAL_RCC_ADC_FORCE_RESET();
00019     __HAL_RCC_ADC_RELEASE_RESET();
00020     __HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_SYSCLK);
00021     
00022     ADC_HandleTypeDef hAdc;
00023     hAdc.Instance = ADC1;
00024     hAdc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV256;
00025     hAdc.Init.Resolution = ADC_RESOLUTION_12B;
00026     hAdc.Init.DataAlign  = ADC_DATAALIGN_RIGHT;
00027     hAdc.Init.ScanConvMode = ADC_SCAN_DISABLE;
00028     hAdc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
00029     hAdc.Init.LowPowerAutoWait = DISABLE;
00030     hAdc.Init.ContinuousConvMode = DISABLE;
00031     hAdc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
00032     hAdc.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
00033     hAdc.Init.OversamplingMode = DISABLE;
00034     
00035     ADC_ChannelConfTypeDef adcChannel;
00036     adcChannel.Channel = ADC_CHANNEL_VBAT;
00037     adcChannel.Rank = ADC_REGULAR_RANK_1;
00038     adcChannel.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
00039     adcChannel.SingleDiff = ADC_SINGLE_ENDED;
00040     adcChannel.OffsetNumber = ADC_OFFSET_NONE;
00041     
00042     HAL_ADC_Init(&hAdc);
00043     HAL_ADC_ConfigChannel(&hAdc,&adcChannel);
00044     
00045     HAL_ADCEx_Calibration_Start(&hAdc,ADC_SINGLE_ENDED);
00046 
00047     while(1)   {
00048         /// TBD: Start ADC, wait for end of onversion, read value
00049         uint8_t text[7];
00050         
00051         snprintf((char *)text, sizeof text,"%+04d~C", -999);
00052         BSP_LCD_GLASS_DisplayChar(&text[0], POINT_OFF, DOUBLEPOINT_OFF,LCD_DIGIT_POSITION_1);
00053         BSP_LCD_GLASS_DisplayChar(&text[1], POINT_OFF, DOUBLEPOINT_OFF,LCD_DIGIT_POSITION_2);
00054         BSP_LCD_GLASS_DisplayChar(&text[2], POINT_ON, DOUBLEPOINT_OFF,LCD_DIGIT_POSITION_3);
00055         BSP_LCD_GLASS_DisplayChar(&text[3], POINT_OFF, DOUBLEPOINT_OFF,LCD_DIGIT_POSITION_4);
00056         BSP_LCD_GLASS_DisplayChar(&text[4], POINT_OFF, DOUBLEPOINT_OFF,LCD_DIGIT_POSITION_5);
00057         BSP_LCD_GLASS_DisplayChar(&text[5], POINT_OFF, DOUBLEPOINT_OFF,LCD_DIGIT_POSITION_6);
00058         HAL_Delay(500);
00059     }
00060 }