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Dependencies:   WebSocketClient WiflyInterface mbed messages

Fork of BatteryModelTester by Damien Frost

source/ADC.cpp@2:7abdaa5a9209, 2016-10-04 (annotated)

Committer:
defrost
Date:
Tue Oct 04 13:59:13 2016 +0000
Revision:
2:7abdaa5a9209
Parent:
1:4403f2ed1c1f
Child:
3:f20e114eb2ee
- Internal temperature sensing works

Who changed what in which revision?

UserRevisionLine numberNew contents of line
defrost 1:4403f2ed1c1f 1
defrost 1:4403f2ed1c1f 2 #include "ADC.h"
defrost 1:4403f2ed1c1f 3 #include "globals.h"
defrost 1:4403f2ed1c1f 4 #include "mbed.h"
defrost 1:4403f2ed1c1f 5
defrost 1:4403f2ed1c1f 6
defrost 1:4403f2ed1c1f 7 //#define DEBUG
defrost 1:4403f2ed1c1f 8 #define INFOMESSAGES
defrost 1:4403f2ed1c1f 9 #define WARNMESSAGES
defrost 1:4403f2ed1c1f 10 #define ERRMESSAGES
defrost 1:4403f2ed1c1f 11 #define FUNCNAME "ADC"
defrost 1:4403f2ed1c1f 12 #include "messages.h"
defrost 1:4403f2ed1c1f 13
defrost 1:4403f2ed1c1f 14
defrost 1:4403f2ed1c1f 15 void ConfigureADC(void){
defrost 1:4403f2ed1c1f 16
defrost 1:4403f2ed1c1f 17 unsigned int value;
defrost 1:4403f2ed1c1f 18
defrost 1:4403f2ed1c1f 19 // ensure power is turned on
defrost 1:4403f2ed1c1f 20 // Grabbed from lines 54-57 of analogin_api.c
defrost 1:4403f2ed1c1f 21 // This turns on the clock to Ports A, B, and C
defrost 1:4403f2ed1c1f 22 RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOBEN | RCC_AHB1ENR_GPIOCEN;
defrost 1:4403f2ed1c1f 23 // This turns on the clock to the ADC:
defrost 1:4403f2ed1c1f 24 RCC->APB2ENR |= RCC_APB2ENR_ADC1EN;
defrost 1:4403f2ed1c1f 25
defrost 1:4403f2ed1c1f 26
defrost 1:4403f2ed1c1f 27 // Turn on the ADC:
defrost 1:4403f2ed1c1f 28 value = ADC_CR2_ADON;
defrost 1:4403f2ed1c1f 29 ADC1->CR2 = value;
defrost 1:4403f2ed1c1f 30 wait_us(100);
defrost 1:4403f2ed1c1f 31
defrost 2:7abdaa5a9209 32 // Set the EOC flag at the end of every regular conversion:
defrost 2:7abdaa5a9209 33 ADC1->CR2 |= ADC_CR2_EOCS;
defrost 2:7abdaa5a9209 34
defrost 1:4403f2ed1c1f 35 // Turn on the internal temperature sensor:
defrost 1:4403f2ed1c1f 36 ADC->CCR |= ADC_CCR_TSVREFE;
defrost 1:4403f2ed1c1f 37
defrost 2:7abdaa5a9209 38 // Set the first (and only channel) to convert to CH16, the internal temperature sensor:
defrost 2:7abdaa5a9209 39 ADC1->SQR3 |= ADC_SQR3_SQ1_4;
defrost 1:4403f2ed1c1f 40
defrost 1:4403f2ed1c1f 41 // Set the sample numbers (making this bigger samples more slowly):
defrost 2:7abdaa5a9209 42 ADC1->SMPR2 = ADC_SMPR1_SMP16_1 | ADC_SMPR1_SMP16_2; // Set for 144 ADC clock cycles
defrost 2:7abdaa5a9209 43 ADC1->SMPR2 = ADC_SMPR1_SMP18_1 | ADC_SMPR1_SMP18_2; // Set for 144 ADC clock cycles
defrost 1:4403f2ed1c1f 44
defrost 1:4403f2ed1c1f 45
defrost 1:4403f2ed1c1f 46 INFO("ADC configuration complete!");
defrost 1:4403f2ed1c1f 47 DBG("ADC Registers:\n\r");
defrost 1:4403f2ed1c1f 48 DBG("The SR Register reads: %d\n\r", ADC1->SR);
defrost 1:4403f2ed1c1f 49 DBG("The CR1 Register reads: %d\n\r", ADC1->CR1);
defrost 1:4403f2ed1c1f 50 DBG("The CR2 Register reads: %d\n\r", ADC1->CR2);
defrost 1:4403f2ed1c1f 51 DBG("The JSQR Register reads: %d\n\r", ADC1->JSQR);
defrost 1:4403f2ed1c1f 52
defrost 1:4403f2ed1c1f 53 return;
defrost 1:4403f2ed1c1f 54 }