Revision 0:82a281385638, committed 2019-08-12

Comitter:

GiJeongKim

Date:

Mon Aug 12 09:13:55 2019 +0000

Commit message:

ADC;

Changed in this revision

diff -r 000000000000 -r 82a281385638 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Aug 12 09:13:55 2019 +0000
@@ -0,0 +1,51 @@
+#include "mbed.h"
+
+AnalogOut dac(PA_4);
+Serial pc(USBTX,USBRX);
+DigitalOut check(PC_2);
+void Init_ADC(void);
+
+int main() {
+    Init_ADC();                                              
+
+    while(1) {
+        check=1;
+        ADC1->CR2  |= 0x40000000;   // Begin sample and conversion
+        float value = ADC1->DR;
+        value = ADC2->DR;
+        value = ADC3->DR;
+        dac=ADC3->DR/4096.0f;
+        check=0;
+        value = ADC1->DR;
+//        pc.printf("%f\n",value);
+//        wait(0.025f);
+    }   
+}
+
+
+void Init_ADC(void){
+    // ADC Setup
+     RCC->APB2ENR |= RCC_APB2ENR_ADC3EN;                        // clock for ADC3
+     RCC->APB2ENR |= RCC_APB2ENR_ADC2EN;                        // clock for ADC2
+     RCC->APB2ENR |= RCC_APB2ENR_ADC1EN;                        // clock for ADC1
+     
+     RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;                        // Enable clock for GPIOC
+     RCC->AHB1ENR |= RCC_AHB1ENR_GPIOBEN;                        // Enable clock for GPIOA
+    
+     ADC->CCR = 0x00000016;                                     // Regular simultaneous mode only
+     ADC1->CR2 |= ADC_CR2_ADON;//0x00000001;                    // ADC1 ON
+     ADC1->SQR3 = 0x0000000E;                    //channel      // use PC_4 as input- ADC1_IN14
+     ADC2->CR2 |= ADC_CR2_ADON;//0x00000001;                    // ADC2 ON
+     ADC2->SQR3 = 0x00000008;                                   // use PB_0 as input - ADC2_IN8
+     ADC3->CR2 |= ADC_CR2_ADON;                                 // ADC3 ON
+     ADC3->SQR3 = 0x0000000B;                                   // use PC_1, - ADC3_IN11
+     GPIOC->MODER |= 0b1100001100;             //each channel   // PC_4, PC_1 are analog inputs 
+     GPIOB->MODER |= 0x3;                                       // PB_0 as analog input
+     
+     ADC1->SMPR1 |= 0x1000;                        //??         // 15 cycles on CH_14, 0b 001000000000000
+     ADC2->SMPR1 |= 0x1000000;                                  // 15 cycles on CH_8, 2^24 = 16^6
+     ADC3->SMPR2 |= 0b1000;                                        // 15 cycles on CH_11, 0b 001000;
+
+    }
+    
+    

diff -r 000000000000 -r 82a281385638 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Aug 12 09:13:55 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file