Demo: ST Nucleo ADC with UART output. Works on all Nucleos.
Dependencies: mbed
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Nucleo-ADC_with_UART_output
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Revision 1:59ea769dee88, committed 2015-03-19
- Comitter:
- Foxnec
- Date:
- Thu Mar 19 17:45:37 2015 +0000
- Parent:
- 0:dade2710823b
- Commit message:
- Final version
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Thu Mar 05 22:54:26 2015 +0000
+++ b/main.cpp Thu Mar 19 17:45:37 2015 +0000
@@ -1,33 +1,76 @@
-#include "mbed.h"
-
-//Nucleo F103,F303,F411 compatible
+/**********************************************************************************
+* @file main.cpp
+* @author Daniel Toms
+* @version V0.1
+* @date 09-March-2015
+* @brief Simple ADC convertor example for Nucleo without DMA.
+* The value is written to the serial port every second at 115200baud.
+* Compatible with all the NUCLEOs.
+***********************************************************************************/
-AnalogIn analog_value(A0);
+/**********************************************************************************/
+/* Table of A/D - D/A pins on Nucleo F303 (LQFP64) */
+/**********************************************************************************/
+/* LQFP64 pin | Nucleo pin | ST Pin | AD/DA Number | Channel */
+/* 8 | A5 | PC_0 | ADC12 | 6 */
+/* 9 | A4 | PC_1 | ADC12 | 7 */
+/* 14 | A0 | PA_0 | ADC1 | 1 */
+/* 15 | A1 | PA_1 | ADC1 | 2 */
+/* 16 | D1 | PA_2 | ADC1 | 3 */
+/* 17 | D0 | PA_3 | ADC1 | 4 */
+/* 20 | A2 | PA_4 | ADC2 | 1 */
+/* 21 | D13 | PA_5 | ADC2 | 2 */
+/* 22 | D12 | PA_6 | ADC2 | 3 */
+/* 23 | D11 | PA_7 | ADC2 | 4 */
+/* 26 | A3 | PB_0 | ADC3 | 12 */
+/**********************************************************************************/
+/* 20 | A2 | PA_4 | DAC1 | 1 */
+/* 21 | D13 | PA_5 | DAC1 | 2 */
+/**********************************************************************************/
-Serial pc(SERIAL_TX, SERIAL_RX);
-
-DigitalOut myled(LED1);
-
+/* Includes ----------------------------------------------------------------------*/
+#include "mbed.h"
+
+/* Defines -----------------------------------------------------------------------*/
// Calculate the corresponding acquisition measure for a given value in mV
#define rawmeas(x) ((0xFFFF*x)/3300)
// Calculate the corresponding mV value from measured voltage
#define mv(x) ((x*3300)/0xFFFF)
+
+/* Function prototypes -----------------------------------------------------------*/
+/* Variables ---------------------------------------------------------------------*/
+
+//mbed - initialization of peripherals
+AnalogIn analog_value(A0);
+Serial pc(SERIAL_TX, SERIAL_RX);
+DigitalOut myled(LED1);
+
+/* Functions----------------------------------------------------------------------*/
+
+
+/***********************************************************************************
+* Function Name : main.
+* Description : Main routine.
+* Input : None.
+* Output : None.
+* Return : None.
+***********************************************************************************/
int main() {
- pc.baud(115200);
+ pc.baud(115200); //Sets the serial port baud rate to 115200baud.
- while(1) {
- uint16_t meas = analog_value.read_u16(); // Converts and read the analog input value
- if (meas > rawmeas(1000)) { // If the value is greater than 1000 mV toggle the LED
- myled = !myled;
+ while(1) { // infinite loop
+ uint16_t meas = analog_value.read_u16(); // Converts and read the analog input value
+ if (meas > rawmeas(1000)) { // If the value is greater than 1000 mV toggle the LED
+ myled = !myled; // toggles the LED
}
- //Prints the measured value in millivolts
- pc.printf("Measured value: %d\n", meas);
+ pc.printf("Measured value: %d\n", meas); // Prints the measured value in millivolts
pc.printf("%d mV\n", mv(meas));
- wait(1); // 200 ms
+ wait(1); // Waits for one second between measures.
+ // You can use wait_ms(x) and wait_us(x) to wait for shorter periods.
}
}