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RFM69_LowPowerLab
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Save program space by calculating CTLbyte instead of fixed literal 

by fca63f659d
This commit is contained in:
Daniel A. Maierhofer 2015-02-06 12:21:13 +01:00
parent 48da5357e0
commit c9440c9249
1 changed files with 8 additions and 7 deletions
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15
RFM69.cpp
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@ -264,19 +264,20 @@ void RFM69::sendFrame(uint8_t toAddress, const void* buffer, uint8_t bufferSize,
writeReg(REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_00); // DIO0 is "Packet Sent"
if (bufferSize > RF69_MAX_DATA_LEN) bufferSize = RF69_MAX_DATA_LEN;
// control byte
uint8_t CTLbyte = 0x00;
if (sendACK)
CTLbyte = 0x80;
else if (requestACK)
CTLbyte = 0x40;
// write to FIFO
select();
SPI.transfer(REG_FIFO | 0x80);
SPI.transfer(bufferSize + 3);
SPI.transfer(toAddress);
SPI.transfer(_address);
// control byte
if (sendACK)
SPI.transfer(0x80);
else if (requestACK)
SPI.transfer(0x40);
else SPI.transfer(0x00);
SPI.transfer(CTLbyte);
for (uint8_t i = 0; i < bufferSize; i++)
SPI.transfer(((uint8_t*) buffer)[i]);