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drivers: sensor: bme280: Add CS control when using SPI

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Adds BME280 SPI chip select pin control if chip select is
configured for the device in the device tree.

Signed-off-by: Jan Tore Guggedal <jantore.guggedal@nordicsemi.no>
This commit is contained in:
Jan Tore Guggedal 2020-01-14 08:34:29 +01:00 • committed by Maureen Helm
commit a536c14132
2 changed files with 17 additions and 0 deletions
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14
drivers/sensor/bme280/bme280.c
View file

@ -347,6 +347,20 @@ static inline int bme280_spi_init(struct bme280_data *data)
data->spi_cfg.frequency = DT_INST_0_BOSCH_BME280_SPI_MAX_FREQUENCY;
data->spi_cfg.slave = DT_INST_0_BOSCH_BME280_BASE_ADDRESS;
#if defined(DT_INST_0_BOSCH_BME280_CS_GPIOS_CONTROLLER)
data->spi_cs_control.gpio_dev =
device_get_binding(DT_INST_0_BOSCH_BME280_CS_GPIOS_CONTROLLER);
if (!data->spi_cs_control.gpio_dev) {
LOG_ERR("Unable to get GPIO SPI CS device");
return -ENODEV;
}
data->spi_cs_control.gpio_pin = DT_INST_0_BOSCH_BME280_CS_GPIOS_PIN;
data->spi_cs_control.delay = 0U;
data->spi_cfg.cs = &data->spi_cs_control;
#endif /* DT_INST_0_BOSCH_BME280_CS_GPIOS_CONTROLLER */
return 0;
}
#endif

3
drivers/sensor/bme280/bme280.h
View file

@ -107,6 +107,9 @@ struct bme280_data {
#elif defined DT_BOSCH_BME280_BUS_SPI
struct device *spi;
struct spi_config spi_cfg;
#if defined(DT_INST_0_BOSCH_BME280_CS_GPIOS_CONTROLLER)
struct spi_cs_control spi_cs_control;
#endif
#else
#error "BME280 device type not specified"
#endif