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driver: ieee802154: rf2xx: implement setting tx power

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Implemented rf2xx_set_txpower() in ieee802154_rf2xx.c by mapping dBm
values to RF2XX register values.

Signed-off-by: Kari Severinkangas <kari.severinkangas@tridonic.com>
Signed-off-by: Markus Becker <markus.becker@tridonic.com>
This commit is contained in:
Markus Becker 2020-06-08 15:47:32 +02:00 • committed by Anas Nashif
commit 30389e01dd
1 changed files with 59 additions and 8 deletions
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67
drivers/ieee802154/ieee802154_rf2xx.c
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@ -67,6 +67,48 @@ static struct net_pkt rf2xx_ack_pkt = {
};
#endif /* CONFIG_NET_L2_OPENTHREAD */
/**
* RF output power for RF2xx
*
* The table below is exact for RF233. For RF231/2 the TX power might
* be a bit off, but good enough.
*
* RF233: http://ww1.microchip.com/downloads/en/devicedoc/atmel-8351-mcu_wireless-at86rf233_datasheet.pdf
* 9.2.5 Register Description Register 0x05 (PHY_TX_PWR)
* 0x0 = 4dBm .. 0xF = -17dBm
*
* RF232: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8321.pdf
* 9.2.5 Register Description Register 0x05 (PHY_TX_PWR)
* 0x0 = 3dBm .. 0xF = -17dBm
*
* RF231: http://ww1.microchip.com/downloads/en/DeviceDoc/doc8111.pdf
* 9.2.5 Register Description Register 0x05 (PHY_TX_PWR)
* 0x0 = 3dBm .. 0xF = -17dBm
*/
#define RF2XX_OUTPUT_POWER_MAX 4
#define RF2XX_OUTPUT_POWER_MIN (-17)
/* Lookup table for PHY_TX_PWR register for RF233 */
static const uint8_t phy_tx_pwr_lt[] = {
0xf, /* -17 dBm: -17 */
0xe, 0xe, 0xe, 0xe, 0xe, /* -12 dBm: -16, -15, -14, -13, -12 */
0xd, 0xd, 0xd, 0xd, /* -8 dBm: -11, -10, -9, -8 */
0xc, 0xc, /* -6 dBm: -7, -6 */
0xb, 0xb, /* -4 dBm: -5, -4 */
0xa, /* -3 dBm: -3 */
0x9, /* -2 dBm: -2 */
0x8, /* -1 dBm: -1 */
0x7, /* 0.0 dBm: 0 */
0x6, /* 1 dBm: 1 */
0x5, /* 2 dBm: 2 */
/* 0x4, */ /* 2.5 dBm */
0x3, /* 3 dBm: 3 */
/* 0x2, */ /* 3.4 dBm */
/* 0x1, */ /* 3.7 dBm */
0x0 /* 4 dBm: 4 */
};
/* Radio Transceiver ISR */
static inline void trx_isr_handler(struct device *port,
struct gpio_callback *cb,
@ -363,15 +405,22 @@ static int rf2xx_set_channel(struct device *dev, uint16_t channel)
static int rf2xx_set_txpower(struct device *dev, int16_t dbm)
{
uint8_t reg;
if (dbm < RF2XX_OUTPUT_POWER_MIN) {
LOG_INF("TX-power %d dBm below min of %d dBm, using %d dBm",
dbm,
RF2XX_OUTPUT_POWER_MIN,
RF2XX_OUTPUT_POWER_MAX);
dbm = RF2XX_OUTPUT_POWER_MIN;
} else if (dbm > RF2XX_OUTPUT_POWER_MAX) {
LOG_INF("TX-power %d dBm above max of %d dBm, using %d dBm",
dbm,
RF2XX_OUTPUT_POWER_MIN,
RF2XX_OUTPUT_POWER_MAX);
dbm = RF2XX_OUTPUT_POWER_MAX;
}
ARG_UNUSED(dbm);
/* TODO: Add look-up table
* Now will max power
*/
reg = rf2xx_iface_reg_read(dev, RF2XX_PHY_TX_PWR_REG) & ~0x0f;
rf2xx_iface_reg_write(dev, RF2XX_PHY_TX_PWR_REG, reg);
rf2xx_iface_reg_write(dev, RF2XX_PHY_TX_PWR_REG,
phy_tx_pwr_lt[dbm - RF2XX_OUTPUT_POWER_MIN]);
return 0;
}
@ -399,6 +448,7 @@ static int rf2xx_set_ieee_addr(struct device *dev, bool set,
return 0;
}
static int rf2xx_set_short_addr(struct device *dev, bool set,
uint16_t short_addr)
{
@ -418,6 +468,7 @@ static int rf2xx_set_short_addr(struct device *dev, bool set,
return 0;
}
static int rf2xx_set_pan_id(struct device *dev, bool set, uint16_t pan_id)
{
uint8_t pan_id_le[2] = { 0xFF, 0xFF };