drivers: spi: spi_pico_pio: Add support for SPI mode 1 (CPOL=0, CPHA=1) (c8a9b5f0) · Commits · Wenxi XU / zephyr

drivers/spi/spi_rpi_pico_pio.c

+21 −0

Original line number	Diff line number	Diff line
		@@ -68,6 +68,22 @@ RPI_PICO_PIO_DEFINE_PROGRAM(spi_mode_0_0, SPI_MODE_0_0_WRAP_TARGET, SPI_MODE_0_0
		/* .wrap */
		);

		/* ------------ */
		/* spi_mode_0_1 */
		/* ------------ */

		#define SPI_MODE_0_1_WRAP_TARGET 0
		#define SPI_MODE_0_1_WRAP 2
		#define SPI_MODE_0_1_CYCLES 4

		RPI_PICO_PIO_DEFINE_PROGRAM(spi_mode_0_1, SPI_MODE_0_1_WRAP_TARGET, SPI_MODE_0_1_WRAP,
		/* .wrap_target */
		0x6021, /* 0: out x, 1 side 0 */
		0xb101, /* 1: mov pins, x side 1 [1] */
		0x4001, /* 2: in pins, 1 side 0 */
		/* .wrap */
		);

		/* ------------ */
		/* spi_mode_1_1 */
		/* ------------ */
		@@ -365,6 +381,11 @@ static int spi_pico_pio_configure(const struct spi_pico_pio_config *dev_cfg,
		wrap_target = RPI_PICO_PIO_GET_WRAP_TARGET(spi_mode_1_1);
		wrap = RPI_PICO_PIO_GET_WRAP(spi_mode_1_1);
		cycles = SPI_MODE_1_1_CYCLES;
		} else if ((cpol == 0) && (cpha == 1)) {
		program = RPI_PICO_PIO_GET_PROGRAM(spi_mode_0_1);
		wrap_target = RPI_PICO_PIO_GET_WRAP_TARGET(spi_mode_0_1);
		wrap = RPI_PICO_PIO_GET_WRAP(spi_mode_0_1);
		cycles = SPI_MODE_0_1_CYCLES;
		} else {
		LOG_ERR("Not supported: cpol=%d, cpha=%d\n", cpol, cpha);
		return -ENOTSUP;