From 24c3d7d72a377671c9a55a849c8a0686a357fa78 Mon Sep 17 00:00:00 2001 From: Meco Man <920369182@qq.com> Date: Sun, 9 Apr 2023 19:11:48 -0400 Subject: [PATCH] [RTduino][stm32g474-nucleo] update readme --- .../applications/arduino_pinout/README.md | 8 ++++++-- .../applications/arduino_pinout/README_zh.md | 10 +++++++--- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README.md b/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README.md index 786c9af476..f9bc5a9c6d 100644 --- a/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README.md +++ b/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README.md @@ -53,6 +53,10 @@ For additional information on pin layout, refer to [pins_arduino.c](pins_arduino | 23 (A6) | -- | | On-chip reference voltage ADC, default controlled by RT-Thread's ADC device framework adc1 | | 24 (A7) | -- | | On-chip temperature sensor ADC, default controlled by RT-Thread's ADC device framework adc1 | +> Notice: +> +> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos. + > References: -> 1.[stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf](https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf) -> 2.[ST-Nucleo-G474RE](https://os.mbed.com/platforms/ST-Nucleo-G474RE) +> 1. [stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf](https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf) +> 2. [ST-Nucleo-G474RE](https://os.mbed.com/platforms/ST-Nucleo-G474RE) diff --git a/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README_zh.md b/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README_zh.md index b421560f76..62fc3a4dd9 100644 --- a/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README_zh.md +++ b/bsp/stm32/stm32g474-st-nucleo/applications/arduino_pinout/README_zh.md @@ -54,6 +54,10 @@ Hardware Drivers Config ---> | 23 (A6) | -- | | 芯片内部参考电压 ADC，默认被RT-Thread的ADC设备框架adc1接管 | | 24 (A7) | -- | | 芯片内部温度 ADC，默认被RT-Thread的ADC设备框架adc1接管 | -> References: -> 1.[stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf](https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf) -> 2.[ST-Nucleo-G474RE](https://os.mbed.com/platforms/ST-Nucleo-G474RE) +> 注意： +> +> 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。 + +> 参考资料: +> 1. [stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf](https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo-64-boards-mb1136-stmicroelectronics.pdf) +> 2. [ST-Nucleo-G474RE](https://os.mbed.com/platforms/ST-Nucleo-G474RE)