ArmfulKST / Mbed 2 deprecated Nucleo_inverter1

This program demonstrates how you might use the complimentary PWM outputs with deadtime for an STM32F103 nucleo board

Dependencies:   mbed

main.cpp@0:badd8991240d, 2015-10-19 (annotated)

Committer:
f3d
Date:
Mon Oct 19 15:02:23 2015 +0000
Revision:
0:badd8991240d
Complimentary output PWM with deadtime for the STM32F103 Nucleo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
f3d 0:badd8991240d 1 #include "mbed.h"
f3d 0:badd8991240d 2 DigitalOut my_led(LED1);
f3d 0:badd8991240d 3
f3d 0:badd8991240d 4 /*
f3d 0:badd8991240d 5 Pin mappings for Timer 1 (the advanced timer with deadtime)
f3d 0:badd8991240d 6 From: https://developer.mbed.org/users/mbed_official/code/mbed-src/file/a11c0372f0ba/targets/hal/TARGET_STM/TARGET_STM32F1/TARGET_NUCLEO_F103RB/PeripheralPins.c
f3d 0:badd8991240d 7 {PA_8, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)}, // TIM1_CH1 - Default
f3d 0:badd8991240d 8 {PA_9, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)}, // TIM1_CH2 - Default
f3d 0:badd8991240d 9 {PA_10, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)}, // TIM1_CH3 - Default
f3d 0:badd8991240d 10 {PB_13, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)}, // TIM1_CH1N - Default
f3d 0:badd8991240d 11 {PB_14, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)}, // TIM1_CH2N - Default
f3d 0:badd8991240d 12 {PB_15, PWM_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, 0)}, // TIM1_CH3N - Default
f3d 0:badd8991240d 13
f3d 0:badd8991240d 14 */
f3d 0:badd8991240d 15
f3d 0:badd8991240d 16 int main()
f3d 0:badd8991240d 17 {
f3d 0:badd8991240d 18
f3d 0:badd8991240d 19 PwmOut PhaATop(PA_8);
f3d 0:badd8991240d 20 PwmOut PhaABtm(PB_13); // This should be the complement of PA_8
f3d 0:badd8991240d 21 PhaATop.period_ms(1);
f3d 0:badd8991240d 22 PhaATop = 0.8;
f3d 0:badd8991240d 23 TIM1->CCER |= 4; //enable complimentary output
f3d 0:badd8991240d 24 TIM1->BDTR |= 0xff; // specify the maximum amount of deadtime required approx 13.5us - see page 356 of reference manual
f3d 0:badd8991240d 25 while (1) {
f3d 0:badd8991240d 26 my_led = !my_led;
f3d 0:badd8991240d 27 wait(0.2); // 500 ms
f3d 0:badd8991240d 28 }
f3d 0:badd8991240d 29 }