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Merged
djaumann merged 1 commit into from
Oct 23, 2026
Merged

boards: kit_psc3m5_evk: enabling SPI #35

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1 change: 1 addition & 0 deletions variants/kit_psc3m5_evk_psc3m5fds2afq1/kit_psc3m5_evk_psc3m5fds2afq1.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ CONFIG_LLEXT_HEAP_SIZE=16
CONFIG_LLEXT_STORAGE_WRITABLE=n

CONFIG_CAN=y
CONFIG_SPI=y

# OpenOCD programs internal flash; the loader reads the sketch directly through
# its memory-mapped secure address. The board's flash controller is disabled,
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56 changes: 47 additions & 9 deletions variants/kit_psc3m5_evk_psc3m5fds2afq1/kit_psc3m5_evk_psc3m5fds2afq1.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -11,10 +11,10 @@
* - user LED aliases: user_led0 -> GPIO port 8 pin 5, user_led1 -> GPIO port 8 pin 4
* - user buttons: SW_1 -> GPIO port 5 pin 0, SW_2 -> GPIO port 2 pin 0
* - serial console: uart3 -> scb3 on pins P6_3/P6_2
* - Arduino SPI header: scb2 on P7.0/P7.1/P7.2, with P7.3 as GPIO chip select
*
* The upstream board DTS does not define an Arduino Uno R3 header or a PWM/ADC
* alias table, so this file maps the board-defined GPIOs directly instead of
* inventing a non-existent Arduino header pin map.
* The board has Uno R3-compatible headers, but the upstream DTS does not define
* Arduino pin aliases. This variant maps its selected GPIOs and SCB2 SPI route.
*/

&flash0 {
Expand All @@ -33,16 +33,21 @@

/ {
zephyr,user {
digital-pin-gpios = <&gpio_prt5 0 0>, /* D0 / SW_1 */
<&gpio_prt2 0 0>, /* D1 / SW_2 */
<&gpio_prt8 5 GPIO_ACTIVE_LOW>, /* D2 / LED_0 */
<&gpio_prt8 4 GPIO_ACTIVE_LOW>; /* D3 / LED_1 */
digital-pin-gpios = <&gpio_prt5 0 0>, /* D0 / SW_1 */
<&gpio_prt2 0 0>, /* D1 / SW_2 */
<&gpio_prt8 5 GPIO_ACTIVE_LOW>, /* D2 / LED_0 */
<&gpio_prt8 4 GPIO_ACTIVE_LOW>, /* D3 / LED_1 */
<&gpio_prt7 3 0>, /* D4 / SPI SS (J3.3) */
<&gpio_prt7 0 0>, /* D5 / SPI SCK (J3.6) */
<&gpio_prt7 1 0>, /* D6 / SPI MOSI (J3.4) */
<&gpio_prt7 2 0>; /* D7 / SPI MISO (J3.5) */

builtin-led-gpios = <&gpio_prt8 5 GPIO_ACTIVE_LOW>,
<&gpio_prt8 4 GPIO_ACTIVE_LOW>;
<&gpio_prt8 4 GPIO_ACTIVE_LOW>;

serials = <&uart3>;
cans = <&can1>;
spis = <&scb2>;
};
};

Expand All @@ -52,4 +57,37 @@

&rtc0 {
status = "okay";
};
};

&gpio_prt7 {
status = "okay";
};

/* SPI changes its divider at runtime; keep CAN on its own divider. */
&peri0_group4_16_5bit_1 {
status = "okay";
clock-div = <1>;
};

&scb2 {
compatible = "infineon,spi";
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
clocks = <&peri0_group4_16_5bit_1>;
pinctrl-0 = <&p7_0_scb2_spi_m_clk &p7_1_scb2_spi_m_mosi
&p7_2_scb2_spi_m_miso>;
pinctrl-names = "default";
};

&p7_0_scb2_spi_m_clk {
drive-push-pull;
};

&p7_1_scb2_spi_m_mosi {
drive-push-pull;
};

&p7_2_scb2_spi_m_miso {
input-enable;
};
32 changes: 23 additions & 9 deletions variants/kit_psc3m5_evk_psc3m5fds2afq1/variant.h
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Original file line number Diff line number Diff line change
Expand Up @@ -14,14 +14,13 @@
/*
* Minimal Arduino-style pin map for the Infineon KIT_PSC3M5_EVK.
*
* This board exposes its real GPIOs in the Zephyr DTS and we mapped the
* Arduino-style aliases to the actual board-defined GPIOs in the overlay.
* The mapping here is intentionally conservative and matches the board's
* runtime GPIO layout without inventing a non-existent Uno R3 header.
* This board has Uno R3-compatible headers, but the upstream DTS does not
* define Arduino aliases. The SPI aliases map to the documented header signals
* on P7.0-P7.3 through the variant overlay.
*/

#define PINS_COUNT (4u)
#define NUM_DIGITAL_PINS (4u)
#define PINS_COUNT (8u)
#define NUM_DIGITAL_PINS (8u)
#define NUM_ANALOG_INPUTS (0u)
#define NUM_ANALOG_OUTPUTS (0u)

Expand All @@ -33,11 +32,26 @@
#define PIN_D1 (1u)
#define PIN_D2 (2u)
#define PIN_D3 (3u)
#define PIN_D4 (4u)
#define PIN_D5 (5u)
#define PIN_D6 (6u)
#define PIN_D7 (7u)

#define PIN_SPI_SS (PIN_D4)
#define PIN_SPI_SCK (PIN_D5)
#define PIN_SPI_MOSI (PIN_D6)
#define PIN_SPI_MISO (PIN_D7)

static const uint8_t SS = PIN_SPI_SS;
static const uint8_t SCK = PIN_SPI_SCK;
static const uint8_t MOSI = PIN_SPI_MOSI;
static const uint8_t MISO = PIN_SPI_MISO;

#define SPI_HOWMANY (1u)

/*
* If the board gains ADC-capable GPIOs in the future, these can be mapped here
* and exposed as A0..A7 in the same way as the rest of the ArduinoCore-zephyr
* variants. For now the board DTS only exposes the user GPIOs/LEDs and UART.
* If ADC inputs are enabled for this variant, map them here and expose them as
* A0..A7 in the same way as the rest of the ArduinoCore-zephyr variants.
*/
#define PIN_A0 (0u)
#define PIN_A1 (1u)
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