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Merge branch 'nrf_radio_channel_change' of git://github.com/spauka/microbit-dal into dal-integration

master
Joe Finney 2018-09-05 09:56:19 +01:00
parent 97382b8fb0 6515942542
commit 2a12ea23c1
1 changed files with 20 additions and 3 deletions
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23
source/drivers/MicroBitRadio.cpp
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@ -149,8 +149,25 @@ int MicroBitRadio::setFrequencyBand(int band)
if (band < 0 || band > 100)
return MICROBIT_INVALID_PARAMETER;
// We need to disable the radio before setting the frequency
NVIC_DisableIRQ(RADIO_IRQn);
NRF_RADIO->EVENTS_DISABLED = 0;
NRF_RADIO->TASKS_DISABLE = 1;
while (NRF_RADIO->EVENTS_DISABLED == 0);
NRF_RADIO->FREQUENCY = (uint32_t)band;
// Reenable the radio to wait for the next packet
NRF_RADIO->EVENTS_READY = 0;
NRF_RADIO->TASKS_RXEN = 1;
while (NRF_RADIO->EVENTS_READY == 0);
NRF_RADIO->EVENTS_END = 0;
NRF_RADIO->TASKS_START = 1;
NVIC_ClearPendingIRQ(RADIO_IRQn);
NVIC_EnableIRQ(RADIO_IRQn);
return MICROBIT_OK;
}
@ -276,8 +293,8 @@ int MicroBitRadio::enable()
while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0);
// Bring up the nrf51822 RADIO module in Nordic's proprietary 1MBps packet radio mode.
setTransmitPower(MICROBIT_RADIO_DEFAULT_TX_POWER);
setFrequencyBand(MICROBIT_RADIO_DEFAULT_FREQUENCY);
NRF_RADIO->TXPOWER = MICROBIT_RADIO_DEFAULT_TX_POWER;
NRF_RADIO->FREQUENCY = MICROBIT_RADIO_DEFAULT_FREQUENCY;
// Configure for 1Mbps throughput.
// This may sound excessive, but running a high data rates reduces the chances of collisions...
@ -505,8 +522,8 @@ int MicroBitRadio::send(FrameBuffer *buffer)
while (NRF_RADIO->EVENTS_READY == 0);
// Start transmission and wait for end of packet.
NRF_RADIO->TASKS_START = 1;
NRF_RADIO->EVENTS_END = 0;
NRF_RADIO->TASKS_START = 1;
while(NRF_RADIO->EVENTS_END == 0);
// Return the radio to using the default receive buffer