From a79b34ef8a8d4bbdf7ff5c7ce49889609cf86c54 Mon Sep 17 00:00:00 2001 From: liYang~ <941843540@qq.com> Date: Wed, 27 Jul 2022 11:44:13 +0800 Subject: [PATCH] Improve the connection of RTdunio PWM(stm32f401-st-nucleo) (#6192) * Improve the connection of RTdunio PWM * Update bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md --- .../applications/arduino_pinout/README.md | 5 +++-- .../applications/arduino_pinout/pins_arduino.c | 15 ++++++++------- 2 files changed, 11 insertions(+), 9 deletions(-) diff --git a/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md b/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md index 22fdda741d..3e80752431 100644 --- a/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md +++ b/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md @@ -32,8 +32,8 @@ Hardware Drivers Config ---> | 7 (D7) | PA8 | 是 | | | 8 (D8) | PA9 | 是 | | | 9 (D9) | PC7 | 是 | PWM（定时器3发生） | -| 10 (D10) | PB6 | 是 | | -| 11 (D11) | PA7 | 是 | | +| 10 (D10) | PB6 | 是 | PWM（定时器4发生） | +| 11 (D11) | PA7 | 是 | PWM（定时器1发生） | | 12 (D12) | PA6 | 是 | | | 13 (D13) | PA5 | 是 | | | 14 (D14) | PB9 | 是 | I2C1-SDA，被RT-Thread的I2C设备框架i2c1总线接管，不可当做普通IO | @@ -53,6 +53,7 @@ Hardware Drivers Config ---> > 1. 驱动舵机和analogWrite函数要选择不同定时器发生的PWM信号引脚，由于STM32的定时器4个通道需要保持相同的频率，如果采用相同的定时器发生的PWM分别驱动舵机和analogWrite，可能会导致舵机失效。 > 2. USART2是Nucleo板的默认串口，理论应对接到了Arduino引脚编号的D0和D1，但是其实际用于串口通信，因此不允许当做普通IO来使用和操作。如果需要将D0、D1与STM32 USART2的引脚相连，需要手动焊接锡桥SB62、SB63。 > 3. Nucleo板的Arduino接口中AVDD（即AREF）默认是与VDD相连的，如果需要扩展板提供外部参考电压，需要将SB57锡桥挑开。 +> 4. D11引脚是PWM反相位引脚(也就是常说的互补输出引脚CHxN)。但是这里不用考虑到占空比互补问题（CHx-20%，CHxN-80%），直接正常使用即可。 > 参考资料 > diff --git a/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/pins_arduino.c b/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/pins_arduino.c index 441d33f113..fc47742a94 100644 --- a/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/pins_arduino.c +++ b/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/pins_arduino.c @@ -1,11 +1,12 @@ /* - * Copyright (c) 2006-2021, RT-Thread Development Team + * Copyright (c) 2006-2022, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2022-04-19 Meco Man first version + * 2022-07-26 liYony Perfect PWM (docking of complementary outputs) */ #include #include @@ -23,15 +24,15 @@ const pin_map_t pin_map_table[]= {D0}, /* RX */ {D1}, /* TX */ {D2, GET_PIN(A,10)}, - {D3, GET_PIN(B,3), "pwm2", 2}, /* PWM */ + {D3, GET_PIN(B,3), "pwm2", 2}, /* PWM2-CH2 */ {D4, GET_PIN(B,5)}, - {D5, GET_PIN(B,4), "pwm3", 1}, /* PWM */ - {D6, GET_PIN(B,10), "pwm2", 3}, /* PWM */ + {D5, GET_PIN(B,4), "pwm3", 1}, /* PWM3-CH1 */ + {D6, GET_PIN(B,10), "pwm2", 3}, /* PWM2-CH3 */ {D7, GET_PIN(A,8)}, {D8, GET_PIN(A,9)}, - {D9, GET_PIN(C,7), "pwm3", 2}, /* PWM */ - {D10, GET_PIN(B,6)}, - {D11, GET_PIN(A,7)}, + {D9, GET_PIN(C,7), "pwm3", 2}, /* PWM3-CH2 */ + {D10, GET_PIN(B,6), "pwm4", 1}, /* PWM4-CH1 */ + {D11, GET_PIN(A,7), "pwm1", -1}, /* PWM1-CH1N */ {D12, GET_PIN(A,6)}, {D13, GET_PIN(A,5)}, {D14}, /* I2C1-SDA */