RE: CLK Amplitude Low

Tom Nowak — Tue, 28 Jun 2022 13:48:18 GMT

The initialization function did not attach.

Here it is.

#define CS_PIN 29
#define size SPI_WORD_SET(8)

struct spi_cs_control cs_cfg = {
	// delay measured in microseconds
	.delay = .055,
	.gpio_dt_flags = GPIO_ACTIVE_LOW,
	.gpio_pin = CS_PIN,
};
struct spi_config spi_cfg = {
	.operation = SPI_OP_MODE_MASTER | !SPI_MODE_CPOL | !SPI_MODE_CPHA | SPI_TRANSFER_MSB | 
		size | SPI_LINES_SINGLE | SPI_FRAME_FORMAT_MOTOROLA, // | !SPI_CS_ACTIVE_HIGH,
    // Can be up to 45000000 must match devicetree
	.frequency = 5000000,
	.slave = 0,
	.cs = &cs_cfg,
};

const struct device * spi_dev;
const struct device * dev;

void spi_init(void)
{
	const char* const spiName = "SPI_1";
	spi_dev = device_get_binding(spiName);
	if (spi_dev == NULL) {
		printk("Could not get %s device\n", spiName);
		return;
	}
}

void cs_init(void){
	dev = device_get_binding("GPIO_0");
	if (!dev) {
		printk("Device not found\n");
		return;
	}
	cs_cfg.gpio_dev = dev;
}