4141705ad3
The ',' character was used as line terminator instead of ';' in SPI routines. The three affected drivers were not showing any issue, but the typo is fixed for clarity. Signed-off-by: Armando Visconti <armando.visconti@st.com>
123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
/* ST Microelectronics IIS2DLPC 3-axis accelerometer driver
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*
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* Copyright (c) 2020 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Datasheet:
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* https://www.st.com/resource/en/datasheet/iis2dlpc.pdf
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*/
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#define DT_DRV_COMPAT st_iis2dlpc
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#include <string.h>
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#include "iis2dlpc.h"
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#include <logging/log.h>
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#if DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
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#define IIS2DLPC_SPI_READ (1 << 7)
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LOG_MODULE_DECLARE(IIS2DLPC, CONFIG_SENSOR_LOG_LEVEL);
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static int iis2dlpc_spi_read(struct iis2dlpc_data *data, uint8_t reg,
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uint8_t *val, uint16_t len)
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{
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const struct device *dev = data->dev;
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const struct iis2dlpc_dev_config *cfg = dev->config;
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const struct spi_config *spi_cfg = &cfg->bus_cfg.spi_cfg->spi_conf;
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uint8_t buffer_tx[2] = { reg | IIS2DLPC_SPI_READ, 0 };
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const struct spi_buf tx_buf = {
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.buf = buffer_tx,
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.len = 2,
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};
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const struct spi_buf_set tx = {
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.buffers = &tx_buf,
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.count = 1
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};
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const struct spi_buf rx_buf[2] = {
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{
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.buf = NULL,
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.len = 1,
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},
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{
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.buf = val,
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.len = len,
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}
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};
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const struct spi_buf_set rx = {
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.buffers = rx_buf,
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.count = 2
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};
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if (spi_transceive(data->bus, spi_cfg, &tx, &rx)) {
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return -EIO;
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}
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return 0;
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}
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static int iis2dlpc_spi_write(struct iis2dlpc_data *data, uint8_t reg,
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uint8_t *val, uint16_t len)
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{
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const struct device *dev = data->dev;
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const struct iis2dlpc_dev_config *cfg = dev->config;
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const struct spi_config *spi_cfg = &cfg->bus_cfg.spi_cfg->spi_conf;
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uint8_t buffer_tx[1] = { reg & ~IIS2DLPC_SPI_READ };
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const struct spi_buf tx_buf[2] = {
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{
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.buf = buffer_tx,
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.len = 1,
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},
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{
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.buf = val,
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.len = len,
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}
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};
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const struct spi_buf_set tx = {
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.buffers = tx_buf,
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.count = 2
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};
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if (spi_write(data->bus, spi_cfg, &tx)) {
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return -EIO;
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}
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return 0;
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}
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stmdev_ctx_t iis2dlpc_spi_ctx = {
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.read_reg = (stmdev_read_ptr) iis2dlpc_spi_read,
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.write_reg = (stmdev_write_ptr) iis2dlpc_spi_write,
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};
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int iis2dlpc_spi_init(const struct device *dev)
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{
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struct iis2dlpc_data *data = dev->data;
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const struct iis2dlpc_dev_config *cfg = dev->config;
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const struct iis2dlpc_spi_cfg *spi_cfg = cfg->bus_cfg.spi_cfg;
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data->ctx_spi.read_reg = (stmdev_read_ptr) iis2dlpc_spi_read;
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data->ctx_spi.write_reg = (stmdev_write_ptr) iis2dlpc_spi_write;
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data->ctx = &data->ctx_spi;
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data->ctx->handle = data;
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if (spi_cfg->cs_gpios_label != NULL) {
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/* handle SPI CS thru GPIO if it is the case */
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data->cs_ctrl.gpio_dev =
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device_get_binding(spi_cfg->cs_gpios_label);
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if (!data->cs_ctrl.gpio_dev) {
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LOG_ERR("Unable to get GPIO SPI CS device");
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return -ENODEV;
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}
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LOG_DBG("SPI GPIO CS configured on %s:%u",
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spi_cfg->cs_gpios_label, data->cs_ctrl.gpio_pin);
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}
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return 0;
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}
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#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(spi) */
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