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drivers: ieee802154: rf2xx: Add SRAM read method

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Add SRAM read method to enable advanced uses on at86rf2xx driver.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
This commit is contained in:
Gerson Fernando Budke 2020-01-26 14:55:44 -03:00 • committed by Johan Hedberg
commit d4f39742ea
2 changed files with 63 additions and 2 deletions
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48
drivers/ieee802154/ieee802154_rf2xx_iface.c
View file

@ -1,7 +1,7 @@
/* ieee802154_rf2xx_iface.c - ATMEL RF2XX IEEE 802.15.4 Interface */
/*
* Copyright (c) 2019 Gerson Fernando Budke
* Copyright (c) 2019-2020 Gerson Fernando Budke
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -248,3 +248,49 @@ void rf2xx_iface_frame_write(struct device *dev,
LOG_DBG("Frame W: PhyStatus: %02X. length: %02X", status, length);
LOG_HEXDUMP_DBG(data, length, "payload");
}
void rf2xx_iface_sram_read(struct device *dev,
u8_t address,
u8_t *data,
u8_t length)
{
const struct rf2xx_context *ctx = dev->driver_data;
u8_t cmd = RF2XX_RF_CMD_SRAM_R;
u8_t status[2];
const struct spi_buf tx_buf[2] = {
{
.buf = &cmd,
.len = 1
},
{
.buf = &address,
.len = 1
},
};
const struct spi_buf_set tx = {
.buffers = tx_buf,
.count = 2
};
const struct spi_buf rx_buf[2] = {
{
.buf = status,
.len = 2
},
{
.buf = data,
.len = length
},
};
const struct spi_buf_set rx = {
.buffers = rx_buf,
.count = 2
};
if (spi_transceive(ctx->spi, &ctx->spi_cfg, &tx, &rx) != 0) {
LOG_ERR("Failed to exec rf2xx_sram_read");
}
LOG_DBG("SRAM R: length: %02X, status: %02X", length, status[0]);
LOG_HEXDUMP_DBG(data, length, "content");
}

17
drivers/ieee802154/ieee802154_rf2xx_iface.h
View file

@ -1,7 +1,7 @@
/* ieee802154_rf2xx_iface.h - ATMEL RF2XX transceiver interface */
/*
* Copyright (c) 2019 Gerson Fernando Budke
* Copyright (c) 2019-2020 Gerson Fernando Budke
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -107,4 +107,19 @@ void rf2xx_iface_frame_write(struct device *dev,
u8_t *data,
u8_t length);
/**
* @brief Reads sram data from the transceiver
*
* This function reads the sram data of the transceiver.
*
* @param[in] dev Transceiver device instance
* @param[in] address Start address to be read
* @param[out] data Pointer to the location to store data
* @param[in] length Number of bytes to be read from the sram space
*/
void rf2xx_iface_sram_read(struct device *dev,
u8_t address,
u8_t *data,
u8_t length);
#endif /* ZEPHYR_DRIVERS_IEEE802154_IEEE802154_RF2XX_IFACE_H_ */