boards: st: nucleo_c071rb: move spi pins to arduino header

This commit changes the spi1 pins to pa15, pa5, pa6, pa7.
The SPI instance has been declared as arduino_spi, but different
pins have been used.

As I2C2 was also using the pins pa6, pa7, I2C2 is remapped
to pb13, pb14 - two pins next to each other on the
st morpho connector CN10.

Signed-off-by: Thomas Stranger <[email protected]>

Author: str4t0m

boards/st/nucleo_c071rb/doc/index.rst

@@ -71,8 +71,9 @@ Default Zephyr Peripheral Mapping:
 - I2C1 SCL/SDA : PB8/PB9 (Arduino I2C)
 - LD1       : PA5
 - LD2       : PC9
-- SPI1 NSS/SCK/MISO/MOSI : PA4/PA5/PA11/PA12 (Arduino SPI)
-- UART_2 TX/RX : PA2/PA3 (ST-Link Virtual Port Com)
+- SPI1 NSS/SCK/MISO/MOSI : PA15/PA5/PA6/PA7 (Arduino SPI)
+- UART_1 TX/RX : PB6/PB7 (Arduino Serial)
+- UART_2 TX/RX : PA2/PA3 (ST-Link Virtual COM Port)
 - USER_PB : PC13
 
 

boards/st/nucleo_c071rb/nucleo_c071rb.dts

@@ -128,15 +128,16 @@
 };
 
 &i2c2 {
-	pinctrl-0 = <&i2c2_scl_pa7 &i2c2_sda_pa6>;
+	pinctrl-0 = <&i2c2_scl_pb13 &i2c2_sda_pb14>;
 	pinctrl-names = "default";
 	status = "okay";
 	clock-frequency = <I2C_BITRATE_FAST>;
 };
 
 &spi1 {
-	pinctrl-0 = <&spi1_nss_pb0 &spi1_sck_pb3
-		     &spi1_miso_pb4 &spi1_mosi_pb5>;
+	/* Note: PA5 is shared with green led0 */
+	pinctrl-0 = <&spi1_nss_pa15 &spi1_sck_pa5
+		     &spi1_miso_pa6 &spi1_mosi_pa7>;
 	pinctrl-names = "default";
 	status = "okay";
 };