luchianmihai/walnux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

boards/nucleo-f302r8: add rs485 support

Browse source 
add rs485 support for nucleo-f302r8 based on RS485 CAN Waveshare shield.

Signed-off-by: raiden00pl <raiden00@railab.me>
This commit is contained in:
raiden00pl 2025-03-22 12:43:02 +01:00 • committed by Xiang Xiao
parent 6443b33a39
commit d9ee02bc2e
2 changed files with 28 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
boards/arm/stm32/nucleo-f302r8/Kconfig
View file

@ -9,6 +9,10 @@ config NUCLEOF302R8_HIGHPRI
bool "High priority interrupt test"
default n
config NUCLEOF302R8_RS485_WAVESHARE
bool "Map USART1 pins to match RS485 CAN Waveshare shield"
default n
if SENSORS_QENCODER
config NUCLEO_F302R8_QETIMER

27
boards/arm/stm32/nucleo-f302r8/include/board.h
View file

@ -206,10 +206,31 @@
#define GPIO_USART2_RX GPIO_USART2_RX_2 /* PA3 */
#define GPIO_USART2_TX GPIO_USART2_TX_2 /* PA2 */
/* USART1 */
/* USART1
*
* At default use:
* USART1_RX - PB7
* USART1_TX - PB6
*
* If CONFIG_NUCLEOF302R8_RS485_WAVESHARE=y use configuration to match RS485
* shield from Waveshare:
*
* USART1_RX - PA10
* USART1_TX - PA9
* RS485_DIR - PA8 (arduino D7)
*
*/
#define GPIO_USART1_RX GPIO_USART1_RX_2 /* PB7 */
#define GPIO_USART1_TX GPIO_USART1_TX_2 /* PB6 */
#ifdef CONFIG_NUCLEOF302R8_RS485_WAVESHARE
# define GPIO_USART1_RX GPIO_USART1_RX_1 /* PA10 */
# define GPIO_USART1_TX GPIO_USART1_TX_1 /* PA9 */
# define GPIO_USART1_RS485_DIR (GPIO_OUTPUT | GPIO_PUSHPULL | \
GPIO_SPEED_50MHz | GPIO_OUTPUT_CLEAR | \
GPIO_PORTA | GPIO_PIN8)
#else
# define GPIO_USART1_RX GPIO_USART1_RX_2 /* PB7 */
# define GPIO_USART1_TX GPIO_USART1_TX_2 /* PB6 */
#endif
/* CAN */