🎨 Rename MAX31865 elements
This commit is contained in:
Scott Lahteine
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b77a5d4c8d
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8d4e4ac115
@ -73,10 +73,10 @@ SPISettings MAX31865::spiConfig = SPISettings(
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* @param spi_clk the SPI clock pin to use
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*/
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MAX31865::MAX31865(int8_t spi_cs, int8_t spi_mosi, int8_t spi_miso, int8_t spi_clk) {
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_cs = spi_cs;
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_mosi = spi_mosi;
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_miso = spi_miso;
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_sclk = spi_clk;
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cselPin = spi_cs;
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mosiPin = spi_mosi;
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misoPin = spi_miso;
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sclkPin = spi_clk;
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}
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/**
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@ -86,8 +86,8 @@ SPISettings MAX31865::spiConfig = SPISettings(
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* @param spi_cs the SPI CS pin to use along with the default SPI device
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*/
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MAX31865::MAX31865(int8_t spi_cs) {
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_cs = spi_cs;
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_sclk = _miso = _mosi = -1;
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cselPin = spi_cs;
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sclkPin = misoPin = mosiPin = -1;
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}
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#else // LARGE_PINMAP
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@ -104,10 +104,10 @@ SPISettings MAX31865::spiConfig = SPISettings(
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* @param pin_mapping set to 1 for positive pin values
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*/
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MAX31865::MAX31865(uint32_t spi_cs, uint32_t spi_mosi, uint32_t spi_miso, uint32_t spi_clk, uint8_t pin_mapping) {
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_cs = spi_cs;
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_mosi = spi_mosi;
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_miso = spi_miso;
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_sclk = spi_clk;
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cselPin = spi_cs;
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mosiPin = spi_mosi;
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misoPin = spi_miso;
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sclkPin = spi_clk;
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}
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/**
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@ -119,8 +119,8 @@ SPISettings MAX31865::spiConfig = SPISettings(
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* @param pin_mapping set to 1 for positive pin values
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*/
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MAX31865::MAX31865(uint32_t spi_cs, uint8_t pin_mapping) {
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_cs = spi_cs;
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_sclk = _miso = _mosi = -1UL; //-1UL or 0xFFFFFFFF or 4294967295
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cselPin = spi_cs;
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sclkPin = misoPin = mosiPin = -1UL; //-1UL or 0xFFFFFFFF or 4294967295
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}
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#endif // LARGE_PINMAP
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@ -139,12 +139,12 @@ SPISettings MAX31865::spiConfig = SPISettings(
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* @param ref The resistance of the reference resistor, in ohms.
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*/
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void MAX31865::begin(max31865_numwires_t wires, float zero, float ref) {
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Rzero = zero;
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Rref = ref;
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zeroRes = zero;
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refRes = ref;
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OUT_WRITE(_cs, HIGH);
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OUT_WRITE(cselPin, HIGH);
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if (_sclk != TERN(LARGE_PINMAP, -1UL, -1)) {
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if (sclkPin != TERN(LARGE_PINMAP, -1UL, -1)) {
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softSpiBegin(SPI_QUARTER_SPEED); // Define pin modes for Software SPI
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}
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else {
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@ -162,10 +162,10 @@ void MAX31865::begin(max31865_numwires_t wires, float zero, float ref) {
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#ifdef MAX31865_DEBUG_SPI
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SERIAL_ECHOLNPGM(
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TERN(LARGE_PINMAP, "LARGE_PINMAP", "Regular")
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" begin call with _cs: ", _cs,
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" _miso: ", _miso,
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" _sclk: ", _sclk,
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" _mosi: ", _mosi,
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" begin call with cselPin: ", cselPin,
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" misoPin: ", misoPin,
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" sclkPin: ", sclkPin,
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" mosiPin: ", mosiPin,
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" config: ", readRegister8(MAX31865_CONFIG_REG)
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);
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#endif
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@ -282,8 +282,8 @@ uint16_t MAX31865::readRaw() {
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*/
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float MAX31865::readResistance() {
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// Strip the error bit (D0) and convert to a float ratio.
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// less precise method: (readRaw() * Rref) >> 16
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return (((readRaw() >> 1) / 32768.0f) * Rref);
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// less precise method: (readRaw() * refRes) >> 16
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return (((readRaw() >> 1) / 32768.0f) * refRes);
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}
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/**
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@ -300,8 +300,8 @@ float MAX31865::temperature() {
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*
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* @return Temperature in C
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*/
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float MAX31865::temperature(uint16_t adcVal) {
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return temperature(((adcVal) / 32768.0f) * Rref);
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float MAX31865::temperature(uint16_t adc_val) {
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return temperature(((adc_val) / 32768.0f) * refRes);
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}
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/**
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@ -309,11 +309,11 @@ float MAX31865::temperature(uint16_t adcVal) {
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* Uses the technique outlined in this PDF:
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* http://www.analog.com/media/en/technical-documentation/application-notes/AN709_0.pdf
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*
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* @param Rrtd the resistance value in ohms
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* @return the temperature in degC
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* @param rtd_res the resistance value in ohms
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* @return the temperature in degC
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*/
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float MAX31865::temperature(float Rrtd) {
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float temp = (RTD_Z1 + sqrt(RTD_Z2 + (RTD_Z3 * Rrtd))) / RTD_Z4;
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float MAX31865::temperature(float rtd_res) {
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float temp = (RTD_Z1 + sqrt(RTD_Z2 + (RTD_Z3 * rtd_res))) * RECIPROCAL(RTD_Z4);
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// From the PDF...
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//
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@ -324,17 +324,17 @@ float MAX31865::temperature(float Rrtd) {
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// of resistance.
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//
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if (temp < 0) {
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Rrtd = (Rrtd / Rzero) * 100; // normalize to 100 ohm
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float rpoly = Rrtd;
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rtd_res = (rtd_res / zeroRes) * 100; // normalize to 100 ohm
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float rpoly = rtd_res;
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temp = -242.02 + (2.2228 * rpoly);
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rpoly *= Rrtd; // square
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rpoly *= rtd_res; // square
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temp += 2.5859e-3 * rpoly;
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rpoly *= Rrtd; // ^3
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rpoly *= rtd_res; // ^3
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temp -= 4.8260e-6 * rpoly;
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rpoly *= Rrtd; // ^4
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rpoly *= rtd_res; // ^4
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temp -= 2.8183e-8 * rpoly;
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rpoly *= Rrtd; // ^5
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rpoly *= rtd_res; // ^5
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temp += 1.5243e-10 * rpoly;
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}
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@ -399,15 +399,15 @@ uint16_t MAX31865::readRegister16(uint8_t addr) {
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*/
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void MAX31865::readRegisterN(uint8_t addr, uint8_t buffer[], uint8_t n) {
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addr &= 0x7F; // make sure top bit is not set
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if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
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if (sclkPin == TERN(LARGE_PINMAP, -1UL, -1))
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SPI.beginTransaction(spiConfig);
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else
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WRITE(_sclk, LOW);
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WRITE(sclkPin, LOW);
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WRITE(_cs, LOW);
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WRITE(cselPin, LOW);
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#ifdef TARGET_LPC1768
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DELAY_CYCLES(_spi_speed);
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DELAY_CYCLES(spiSpeed);
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#endif
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spiTransfer(addr);
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@ -420,10 +420,10 @@ void MAX31865::readRegisterN(uint8_t addr, uint8_t buffer[], uint8_t n) {
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buffer++;
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}
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if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
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if (sclkPin == TERN(LARGE_PINMAP, -1UL, -1))
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SPI.endTransaction();
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WRITE(_cs, HIGH);
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WRITE(cselPin, HIGH);
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}
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/**
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@ -433,24 +433,24 @@ void MAX31865::readRegisterN(uint8_t addr, uint8_t buffer[], uint8_t n) {
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* @param data the data to write
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*/
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void MAX31865::writeRegister8(uint8_t addr, uint8_t data) {
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if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
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if (sclkPin == TERN(LARGE_PINMAP, -1UL, -1))
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SPI.beginTransaction(spiConfig);
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else
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WRITE(_sclk, LOW);
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WRITE(sclkPin, LOW);
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WRITE(_cs, LOW);
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WRITE(cselPin, LOW);
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#ifdef TARGET_LPC1768
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DELAY_CYCLES(_spi_speed);
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DELAY_CYCLES(spiSpeed);
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#endif
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spiTransfer(addr | 0x80); // make sure top bit is set
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spiTransfer(data);
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if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
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if (sclkPin == TERN(LARGE_PINMAP, -1UL, -1))
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SPI.endTransaction();
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WRITE(_cs, HIGH);
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WRITE(cselPin, HIGH);
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}
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/**
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@ -463,19 +463,19 @@ void MAX31865::writeRegister8(uint8_t addr, uint8_t data) {
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* @return the 8-bit response
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*/
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uint8_t MAX31865::spiTransfer(uint8_t x) {
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if (_sclk == TERN(LARGE_PINMAP, -1UL, -1))
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if (sclkPin == TERN(LARGE_PINMAP, -1UL, -1))
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return SPI.transfer(x);
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#ifdef TARGET_LPC1768
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return swSpiTransfer(x, _spi_speed, _sclk, _miso, _mosi);
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return swSpiTransfer(x, spiSpeed, sclkPin, misoPin, mosiPin);
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#else
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uint8_t reply = 0;
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for (int i = 7; i >= 0; i--) {
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WRITE(_sclk, HIGH); DELAY_NS_VAR(_spi_delay);
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WRITE(sclkPin, HIGH); DELAY_NS_VAR(spiDelay);
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reply <<= 1;
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WRITE(_mosi, x & _BV(i)); DELAY_NS_VAR(_spi_delay);
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if (READ(_miso)) reply |= 1;
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WRITE(_sclk, LOW); DELAY_NS_VAR(_spi_delay);
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WRITE(mosiPin, x & _BV(i)); DELAY_NS_VAR(spiDelay);
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if (READ(misoPin)) reply |= 1;
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WRITE(sclkPin, LOW); DELAY_NS_VAR(spiDelay);
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}
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return reply;
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#endif
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@ -486,13 +486,13 @@ void MAX31865::softSpiBegin(const uint8_t spi_speed) {
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SERIAL_ECHOLNPGM("Initializing MAX31865 Software SPI");
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#endif
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#ifdef TARGET_LPC1768
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swSpiBegin(_sclk, _miso, _mosi);
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_spi_speed = swSpiInit(spi_speed, _sclk, _mosi);
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swSpiBegin(sclkPin, misoPin, mosiPin);
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spiSpeed = swSpiInit(spi_speed, sclkPin, mosiPin);
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#else
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_spi_delay = (100UL << spi_speed) / 3; // Calculate delay in ns. Top speed is ~10MHz, or 100ns delay between bits.
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OUT_WRITE(_sclk, LOW);
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SET_OUTPUT(_mosi);
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SET_INPUT(_miso);
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spiDelay = (100UL << spi_speed) / 3; // Calculate delay in ns. Top speed is ~10MHz, or 100ns delay between bits.
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OUT_WRITE(sclkPin, LOW);
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SET_OUTPUT(mosiPin);
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SET_INPUT(misoPin);
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#endif
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}
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@ -89,15 +89,15 @@ class MAX31865 {
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private:
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static SPISettings spiConfig;
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TERN(LARGE_PINMAP, uint32_t, uint8_t) _sclk, _miso, _mosi, _cs;
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TERN(LARGE_PINMAP, uint32_t, uint8_t) sclkPin, misoPin, mosiPin, cselPin;
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#ifdef TARGET_LPC1768
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uint8_t _spi_speed;
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uint8_t spiSpeed;
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#else
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uint16_t _spi_delay;
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uint16_t spiDelay;
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#endif
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float Rzero, Rref;
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float zeroRes, refRes;
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void setConfig(uint8_t config, bool enable);
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@ -135,6 +135,6 @@ public:
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uint16_t readRaw();
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float readResistance();
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float temperature();
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float temperature(uint16_t adcVal);
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float temperature(float Rrtd);
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float temperature(uint16_t adc_val);
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float temperature(float rtd_res);
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};
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