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Merge pull request #13750 from benpicco/drivers/at86rf215_fix_wakeup

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drivers/at86rf215: fix reset after deep sleep
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Francisco 2020-04-03 09:04:51 +02:00 committed by GitHub
commit d4580b4c36
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1 changed files with 8 additions and 8 deletions
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16
drivers/at86rf215/at86rf215_internal.c
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@ -53,22 +53,22 @@ int at86rf215_hardware_reset(at86rf215_t *dev)
gpio_set(dev->params.reset_pin); gpio_set(dev->params.reset_pin);
xtimer_usleep(AT86RF215_RESET_DELAY_US); xtimer_usleep(AT86RF215_RESET_DELAY_US);
uint8_t state = _get_reg_with_lock(dev, dev->RF->RG_STATE) & STATE_STATE_MASK;
if (state != RF_STATE_TRXOFF && state != RF_STATE_RESET) {
spi_release(SPIDEV);
return -ENODEV;
}
/* While the device is in RESET / DEEP SLEEP, all registers /* While the device is in RESET / DEEP SLEEP, all registers
but STATE will read 0xFF. but STATE will read 0xFF.
WAKEUP IRQ signals that the device is ready. */ WAKEUP IRQ signals that the device is ready. */
state = 0; uint8_t state = 0;
while (state == 0xFF || !(state & IRQS_WAKEUP_MASK)) { uint8_t tries = 255;
while (--tries && (state == 0xFF || !(state & IRQS_WAKEUP_MASK))) {
state = _get_reg_with_lock(dev, dev->RF->RG_IRQS); state = _get_reg_with_lock(dev, dev->RF->RG_IRQS);
} }
spi_release(SPIDEV); spi_release(SPIDEV);
/* no device connected */
if (!tries) {
return -ENODEV;
}
/* clear interrupts */ /* clear interrupts */
at86rf215_reg_read(dev, RG_RF09_IRQS); at86rf215_reg_read(dev, RG_RF09_IRQS);
at86rf215_reg_read(dev, RG_RF24_IRQS); at86rf215_reg_read(dev, RG_RF24_IRQS);