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8mhz SPI clock

This commit is contained in:
Felix Rusu 2020-05-18 11:12:28 -04:00
parent 58695e88c6
commit 1bc4b02f22
1 changed files with 7 additions and 8 deletions
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15
RFM69.cpp
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@ -116,7 +116,7 @@ bool RFM69::initialize(uint8_t freqBand, uint16_t nodeID, uint8_t networkID)
#endif #endif
#ifdef SPI_HAS_TRANSACTION #ifdef SPI_HAS_TRANSACTION
_settings = SPISettings(4000000, MSBFIRST, SPI_MODE0); _settings = SPISettings(8000000, MSBFIRST, SPI_MODE0);
#endif #endif
uint32_t start = millis(); uint32_t start = millis();
@ -304,6 +304,7 @@ void RFM69::sendACK(const void* buffer, uint8_t bufferSize) {
// internal function // internal function
void RFM69::sendFrame(uint16_t toAddress, const void* buffer, uint8_t bufferSize, bool requestACK, bool sendACK) void RFM69::sendFrame(uint16_t toAddress, const void* buffer, uint8_t bufferSize, bool requestACK, bool sendACK)
{ {
//NOTE: overridden in RFM69_ATC!
setMode(RF69_MODE_STANDBY); // turn off receiver to prevent reception while filling fifo setMode(RF69_MODE_STANDBY); // turn off receiver to prevent reception while filling fifo
while ((readReg(REG_IRQFLAGS1) & RF_IRQFLAGS1_MODEREADY) == 0x00); // wait for ModeReady while ((readReg(REG_IRQFLAGS1) & RF_IRQFLAGS1_MODEREADY) == 0x00); // wait for ModeReady
//writeReg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_00); // DIO0 is "Packet Sent" //writeReg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_00); // DIO0 is "Packet Sent"
@ -484,13 +485,11 @@ void RFM69::select() {
// set RFM69 SPI settings explicitly // set RFM69 SPI settings explicitly
SPI.setDataMode(SPI_MODE0); SPI.setDataMode(SPI_MODE0);
SPI.setBitOrder(MSBFIRST); SPI.setBitOrder(MSBFIRST);
#ifdef defined(__SAMD21__) #ifdef defined(__SAMD51__)
SPI.setClockDivider(SPI_CLOCK_DIV2); SPI.setClockDivider(SPI_CLOCK_DIV16);
#elif defined(__SAMD51__) #else
SPI.setClockDivider(SPI_CLOCK_DIV16); SPI.setClockDivider(SPI_CLOCK_DIV2);
#else #endif
SPI.setClockDivider(SPI_CLOCK_DIV4); // decided to slow down from DIV2 after SPI stalling in some instances, especially visible on mega1284p when RFM69 and FLASH chip both present
#endif
#endif #endif
digitalWrite(_slaveSelectPin, LOW); digitalWrite(_slaveSelectPin, LOW);
} }