A program to monitor some parameters for a motor
Dependencies: mbed-dev BufferSerial
Thanks to David Lowe for https://developer.mbed.org/users/gregeric/code/Nucleo_Hello_Encoder/ which I adapted for the use of TIM2 32bit timer as an encoder reader on the Nucleo L432KC board.
main.cpp@1:a611582bffa7, 2017-03-08 (annotated)
- Committer:
- tonnyleonard
- Date:
- Wed Mar 08 21:37:30 2017 +0000
- Revision:
- 1:a611582bffa7
- Parent:
- 0:789510d98ade
- Child:
- 2:958e9094b198
TIM1 fixed
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
tonnyleonard | 0:789510d98ade | 1 | /* |
tonnyleonard | 0:789510d98ade | 2 | * Using STM32's counter peripherals to interface rotary encoders. |
tonnyleonard | 0:789510d98ade | 3 | * Encoders are supported on F4xx's TIM1,2,3,4,5. TIM2 & TIM5 have 32bit count, others 16bit. |
tonnyleonard | 0:789510d98ade | 4 | * Beware mbed uses TIM5 for system timer, SPI needs TIM1, others used for PWM. |
tonnyleonard | 0:789510d98ade | 5 | * Check your platform's PeripheralPins.c & PeripheralNames.h if you need both PWM & encoders. |
tonnyleonard | 0:789510d98ade | 6 | * |
tonnyleonard | 0:789510d98ade | 7 | * Edit HAL_TIM_Encoder_MspInitFx.cpp to suit your mcu & board's available pinouts & pullups/downs. |
tonnyleonard | 0:789510d98ade | 8 | * |
tonnyleonard | 0:789510d98ade | 9 | * Thanks to: |
tonnyleonard | 0:789510d98ade | 10 | * http://petoknm.wordpress.com/2015/01/05/rotary-encoder-and-stm32/ |
tonnyleonard | 0:789510d98ade | 11 | * |
tonnyleonard | 0:789510d98ade | 12 | * References: |
tonnyleonard | 0:789510d98ade | 13 | * http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00122015.pdf |
tonnyleonard | 0:789510d98ade | 14 | * http://www.st.com/st-web-ui/static/active/en/resource/technical/document/reference_manual/DM00096844.pdf |
tonnyleonard | 0:789510d98ade | 15 | * http://www.st.com/web/en/resource/technical/document/application_note/DM00042534.pdf |
tonnyleonard | 0:789510d98ade | 16 | * http://www.st.com/web/en/resource/technical/document/datasheet/DM00102166.pdf |
tonnyleonard | 0:789510d98ade | 17 | * |
tonnyleonard | 0:789510d98ade | 18 | * David Lowe Jan 2015 |
tonnyleonard | 0:789510d98ade | 19 | */ |
tonnyleonard | 0:789510d98ade | 20 | |
tonnyleonard | 0:789510d98ade | 21 | #include "mbed.h" |
tonnyleonard | 0:789510d98ade | 22 | #include "Encoder.h" |
tonnyleonard | 0:789510d98ade | 23 | |
tonnyleonard | 1:a611582bffa7 | 24 | TIM_Encoder_InitTypeDef encoder1, encoder2; // encoder3, encoder4; |
tonnyleonard | 1:a611582bffa7 | 25 | TIM_HandleTypeDef timer1, timer2; // timer3, timer4; |
tonnyleonard | 0:789510d98ade | 26 | |
tonnyleonard | 0:789510d98ade | 27 | int main() |
tonnyleonard | 0:789510d98ade | 28 | { |
tonnyleonard | 0:789510d98ade | 29 | //examples |
tonnyleonard | 0:789510d98ade | 30 | |
tonnyleonard | 0:789510d98ade | 31 | //counting on A-input only, 2 ticks per cycle, rolls over at 100 |
tonnyleonard | 1:a611582bffa7 | 32 | EncoderInit(&encoder1, &timer1, TIM1, 0xffff, TIM_ENCODERMODE_TI12); |
tonnyleonard | 0:789510d98ade | 33 | |
tonnyleonard | 0:789510d98ade | 34 | //counting on both A&B inputs, 4 ticks per cycle, full 32-bit count |
tonnyleonard | 0:789510d98ade | 35 | EncoderInit(&encoder2, &timer2, TIM2, 0xffffffff, TIM_ENCODERMODE_TI12); |
tonnyleonard | 0:789510d98ade | 36 | |
tonnyleonard | 0:789510d98ade | 37 | //counting on B-input only, 2 ticks per cycle, full 16-bit count |
tonnyleonard | 0:789510d98ade | 38 | //EncoderInit(&encoder3, &timer3, TIM3, 0xffff, TIM_ENCODERMODE_TI2); |
tonnyleonard | 0:789510d98ade | 39 | |
tonnyleonard | 0:789510d98ade | 40 | //counting on both A&B inputs, 4 ticks per cycle, full 16-bit count |
tonnyleonard | 0:789510d98ade | 41 | //EncoderInit(&encoder4, &timer4, TIM4, 0xffff, TIM_ENCODERMODE_TI12); |
tonnyleonard | 0:789510d98ade | 42 | |
tonnyleonard | 0:789510d98ade | 43 | //TIM5 is used by mbed for systick |
tonnyleonard | 0:789510d98ade | 44 | //EncoderInit(encoder2, timer2, TIM5, 0xffffffff, TIM_ENCODERMODE_TI12); |
tonnyleonard | 0:789510d98ade | 45 | |
tonnyleonard | 0:789510d98ade | 46 | printf("STM HAL encoder demo\n\r"); |
tonnyleonard | 0:789510d98ade | 47 | |
tonnyleonard | 0:789510d98ade | 48 | while(1) { |
tonnyleonard | 1:a611582bffa7 | 49 | uint16_t count1=0; // count3=0, count4=0; |
tonnyleonard | 0:789510d98ade | 50 | uint32_t count2=0; |
tonnyleonard | 1:a611582bffa7 | 51 | int8_t dir1, dir2; // dir3, dir4; |
tonnyleonard | 0:789510d98ade | 52 | |
tonnyleonard | 0:789510d98ade | 53 | |
tonnyleonard | 0:789510d98ade | 54 | //OK 401 411 446 TICKER 030 |
tonnyleonard | 0:789510d98ade | 55 | //count1=TIM1->CNT; |
tonnyleonard | 0:789510d98ade | 56 | //dir1=TIM1->CR1&TIM_CR1_DIR; |
tonnyleonard | 1:a611582bffa7 | 57 | count1= __HAL_TIM_GET_COUNTER(&timer1); |
tonnyleonard | 1:a611582bffa7 | 58 | dir1 = __HAL_TIM_IS_TIM_COUNTING_DOWN(&timer1); |
tonnyleonard | 0:789510d98ade | 59 | |
tonnyleonard | 0:789510d98ade | 60 | //OK 401 411 446 NOK 030 |
tonnyleonard | 0:789510d98ade | 61 | //count2=TIM2->CNT; |
tonnyleonard | 0:789510d98ade | 62 | //dir2=TIM2->CR1&TIM_CR1_DIR; |
tonnyleonard | 0:789510d98ade | 63 | count2=__HAL_TIM_GET_COUNTER(&timer2); |
tonnyleonard | 0:789510d98ade | 64 | dir2 = __HAL_TIM_IS_TIM_COUNTING_DOWN(&timer2); |
tonnyleonard | 0:789510d98ade | 65 | |
tonnyleonard | 0:789510d98ade | 66 | //OK 401 411 446 030 |
tonnyleonard | 0:789510d98ade | 67 | //count3=TIM3->CNT; |
tonnyleonard | 0:789510d98ade | 68 | //dir3=TIM3->CR1&TIM_CR1_DIR; |
tonnyleonard | 0:789510d98ade | 69 | //count3=__HAL_TIM_GET_COUNTER(&timer3); |
tonnyleonard | 0:789510d98ade | 70 | //dir3 = __HAL_TIM_IS_TIM_COUNTING_DOWN(&timer3); |
tonnyleonard | 0:789510d98ade | 71 | |
tonnyleonard | 0:789510d98ade | 72 | //OK 401 411 446 N/A 030 |
tonnyleonard | 0:789510d98ade | 73 | //count4=TIM4->CNT; |
tonnyleonard | 0:789510d98ade | 74 | //dir4=TIM4->CR1&TIM_CR1_DIR; |
tonnyleonard | 0:789510d98ade | 75 | //count4=__HAL_TIM_GET_COUNTER(&timer4); |
tonnyleonard | 0:789510d98ade | 76 | //dir4 = __HAL_TIM_IS_TIM_COUNTING_DOWN(&timer4); |
tonnyleonard | 0:789510d98ade | 77 | |
tonnyleonard | 0:789510d98ade | 78 | //TICKER 401 411 446 N/A 030 |
tonnyleonard | 0:789510d98ade | 79 | // count5=__HAL_TIM_GET_COUNTER(&timer5); |
tonnyleonard | 0:789510d98ade | 80 | // dir5 = __HAL_TIM_IS_TIM_COUNTING_DOWN(&timer5); |
tonnyleonard | 0:789510d98ade | 81 | |
tonnyleonard | 1:a611582bffa7 | 82 | printf("%d%s %d%s\r\n", count1, dir1==0 ? "+":"-", count2, dir2==0 ? "+":"-" ); |
tonnyleonard | 0:789510d98ade | 83 | wait(0.5); |
tonnyleonard | 0:789510d98ade | 84 | } |
tonnyleonard | 0:789510d98ade | 85 | } |