MAX11410 high speed 24-bit Delta-Sigma ADC
Dependents: MAX11410BOB_24bit_ADC MAX11410BOB_Serial_Tester
MAX11410.cpp
- Committer:
- whismanoid
- Date:
- 2020-04-15
- Revision:
- 24:428b7670e45f
- Parent:
- 23:22e7830bcccb
- Child:
- 25:c4be3afbfafd
File content as of revision 24:428b7670e45f:
// /******************************************************************************* // * Copyright (C) 2020 Maxim Integrated Products, Inc., All Rights Reserved. // * // * Permission is hereby granted, free of charge, to any person obtaining a // * copy of this software and associated documentation files (the "Software"), // * to deal in the Software without restriction, including without limitation // * the rights to use, copy, modify, merge, publish, distribute, sublicense, // * and/or sell copies of the Software, and to permit persons to whom the // * Software is furnished to do so, subject to the following conditions: // * // * The above copyright notice and this permission notice shall be included // * in all copies or substantial portions of the Software. // * // * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS // * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. // * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES // * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, // * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR // * OTHER DEALINGS IN THE SOFTWARE. // * // * Except as contained in this notice, the name of Maxim Integrated // * Products, Inc. shall not be used except as stated in the Maxim Integrated // * Products, Inc. Branding Policy. // * // * The mere transfer of this software does not imply any licenses // * of trade secrets, proprietary technology, copyrights, patents, // * trademarks, maskwork rights, or any other form of intellectual // * property whatsoever. Maxim Integrated Products, Inc. retains all // * ownership rights. // ******************************************************************************* // */ // ********************************************************************* // @file MAX11410.cpp // ********************************************************************* // Device Driver file // DO NOT EDIT; except areas designated "CUSTOMIZE". Automatically generated file. // generated by XMLSystemOfDevicesToMBED.py // System Name = ExampleSystem // System Description = Device driver example #include "MAX11410.h" // Device Name = MAX11410 // Device Description = 1.9ksps, Low-Power, Serial SPI 24-Bit, 10-Channel, Differential/Single-Ended Input, SAR ADC // Device DeviceBriefDescription = 24-bit 1.9ksps Delta-Sigma ADC // Device Manufacturer = Maxim Integrated // Device PartNumber = MAX11410ATI+ // Device RegValue_Width = DataWidth16bit_HL // // ADC MaxOutputDataRate = 1.9ksps // ADC NumChannels = 10 // ADC ResolutionBits = 24 // // SPI CS = ActiveLow // SPI FrameStart = CS // SPI CPOL = 0 // SPI CPHA = 0 // SPI MOSI and MISO Data are both stable on Rising edge of SCLK // SPI SCLK Idle Low // SPI SCLKMaxMHz = 8 // SPI SCLKMinMHz = 0 // // CODE GENERATOR: class constructor definition MAX11410::MAX11410(SPI &spi, DigitalOut &cs_pin, // SPI interface // CODE GENERATOR: class constructor definition gpio InputPin pins // CODE GENERATOR: class constructor definition gpio OutputPin pins // CODE GENERATOR: class constructor definition ic_variant MAX11410_ic_t ic_variant) // CODE GENERATOR: class constructor initializer list : m_spi(spi), m_cs_pin(cs_pin), // SPI interface // CODE GENERATOR: class constructor initializer list gpio InputPin pins // CODE GENERATOR: class constructor initializer list gpio OutputPin pins // CODE GENERATOR: class constructor initializer list ic_variant m_ic_variant(ic_variant) { // CODE GENERATOR: class constructor definition SPI interface initialization // // SPI CS = ActiveLow // SPI FrameStart = CS m_SPI_cs_state = 1; if (m_cs_pin.is_connected()) { // avoid mbed runtime error if pin is NC not connected m_cs_pin = m_SPI_cs_state; } // SPI CPOL = 0 // SPI CPHA = 0 // SPI MOSI and MISO Data are both stable on Rising edge of SCLK // SPI SCLK Idle Low m_SPI_dataMode = 0; //SPI_MODE0; // CPOL=0,CPHA=0: Rising Edge stable; SCLK idle Low m_spi.format(8,m_SPI_dataMode); // int bits_must_be_8, int mode=0_3 CPOL=0,CPHA=0 // SPI SCLKMaxMHz = 8 // SPI SCLKMinMHz = 0 //#define SPI_SCLK_Hz 48000000 // 48MHz //#define SPI_SCLK_Hz 24000000 // 24MHz //#define SPI_SCLK_Hz 12000000 // 12MHz //#define SPI_SCLK_Hz 6000000 // 6MHz //#define SPI_SCLK_Hz 4000000 // 4MHz //#define SPI_SCLK_Hz 2000000 // 2MHz //#define SPI_SCLK_Hz 1000000 // 1MHz m_SPI_SCLK_Hz = 8000000; // 8MHz; MAX11410 limit is 8MHz m_spi.frequency(m_SPI_SCLK_Hz); } // CODE GENERATOR: class destructor definition MAX11410::~MAX11410() { // do nothing } // CODE GENERATOR: spi_frequency setter definition /// set SPI SCLK frequency void MAX11410::spi_frequency(int spi_sclk_Hz) { m_SPI_SCLK_Hz = spi_sclk_Hz; m_spi.frequency(m_SPI_SCLK_Hz); } // CODE GENERATOR: omit global g_MAX11410_device // CODE GENERATOR: extern function declarations // CODE GENERATOR: extern function requirement MAX11410::SPIoutputCS // Assert SPI Chip Select // SPI chip-select for MAX11410 // inline void MAX11410::SPIoutputCS(int isLogicHigh) { // CODE GENERATOR: extern function definition for function SPIoutputCS // CODE GENERATOR: extern function definition for standard SPI interface function SPIoutputCS(int isLogicHigh) m_SPI_cs_state = isLogicHigh; if (m_cs_pin.is_connected()) { // avoid mbed runtime error if pin is NC not connected m_cs_pin = m_SPI_cs_state; } } // CODE GENERATOR: extern function requirement MAX11410::SPIwrite16bits // SPI write 16 bits // SPI interface to MAX11410 shift 16 bits mosiData into MAX11410 DIN // void MAX11410::SPIwrite16bits(int16_t mosiData16) { // CODE GENERATOR: extern function definition for function SPIwrite16bits // TODO1: CODE GENERATOR: extern function definition for standard SPI interface function SPIwrite16bits(int16_t mosiData16) size_t byteCount = 2; static char mosiData[2]; static char misoData[2]; mosiData[0] = (char)((mosiData16 >> 8) & 0xFF); // MSByte mosiData[1] = (char)((mosiData16 >> 0) & 0xFF); // LSByte // // Arduino: begin critical section: noInterrupts() masks all interrupt sources; end critical section with interrupts() //~ noInterrupts(); // //~ digitalWrite(Scope_Trigger_Pin, LOW); // diagnostic Scope_Trigger_Pin // unsigned int numBytesTransferred = m_spi.write(mosiData, byteCount, misoData, byteCount); //~ m_spi.transfer(mosiData8_FF0000); //~ m_spi.transfer(mosiData16_00FF00); //~ m_spi.transfer(mosiData16_0000FF); // //~ digitalWrite(Scope_Trigger_Pin, HIGH); // diagnostic Scope_Trigger_Pin // // Arduino: begin critical section: noInterrupts() masks all interrupt sources; end critical section with interrupts() //~ interrupts(); // Optional Diagnostic function to print SPI transactions if (onSPIprint) { onSPIprint(byteCount, (uint8_t*)mosiData, (uint8_t*)misoData); } // // VERIFY: SPIwrite24bits print diagnostic information //cmdLine.serial().printf(" MOSI->")); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData8_FF0000 & 0xFF), HEX); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData16_00FF00 & 0xFF), HEX); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData16_0000FF & 0xFF), HEX); // hex dump mosiData[0..byteCount-1] #if 0 // HAS_MICROUSBSERIAL cmdLine_microUSBserial.serial().printf("\r\nSPI"); if (byteCount > 7) { cmdLine_microUSBserial.serial().printf(" byteCount:%d", byteCount); } cmdLine_microUSBserial.serial().printf(" MOSI->"); for (unsigned int byteIndex = 0; byteIndex < byteCount; byteIndex++) { cmdLine_microUSBserial.serial().printf(" 0x%2.2X", mosiData[byteIndex]); } // hex dump misoData[0..byteCount-1] cmdLine_microUSBserial.serial().printf(" MISO<-"); for (unsigned int byteIndex = 0; byteIndex < numBytesTransferred; byteIndex++) { cmdLine_microUSBserial.serial().printf(" 0x%2.2X", misoData[byteIndex]); } cmdLine_microUSBserial.serial().printf(" "); #endif #if 0 // HAS_DAPLINK_SERIAL cmdLine_DAPLINKserial.serial().printf("\r\nSPI"); if (byteCount > 7) { cmdLine_DAPLINKserial.serial().printf(" byteCount:%d", byteCount); } cmdLine_DAPLINKserial.serial().printf(" MOSI->"); for (unsigned int byteIndex = 0; byteIndex < byteCount; byteIndex++) { cmdLine_DAPLINKserial.serial().printf(" 0x%2.2X", mosiData[byteIndex]); } // hex dump misoData[0..byteCount-1] cmdLine_DAPLINKserial.serial().printf(" MISO<-"); for (unsigned int byteIndex = 0; byteIndex < numBytesTransferred; byteIndex++) { cmdLine_DAPLINKserial.serial().printf(" 0x%2.2X", misoData[byteIndex]); } cmdLine_DAPLINKserial.serial().printf(" "); #endif // VERIFY: DIAGNOSTIC: print MAX5715 device register write // TODO: MAX5715_print_register_verbose(mosiData8_FF0000, mosiData16_00FFFF); // TODO: print_verbose_SPI_diagnostic(mosiData16_FF00, mosiData16_00FF, misoData16_FF00, misoData16_00FF); // // int misoData16 = (misoData16_FF00 << 8) | misoData16_00FF; // return misoData16; } // CODE GENERATOR: extern function requirement MAX11410::SPIreadWrite16bits // SPI read and write 16 bits // SPI interface to MAX11410 shift 16 bits mosiData16 into MAX11410 DIN // while simultaneously capturing 16 bits miso data from MAX11410 DOUT // int16_t MAX11410::SPIreadWrite16bits(int16_t mosiData16) { // CODE GENERATOR: extern function definition for function SPIreadWrite16bits // TODO1: CODE GENERATOR: extern function definition for standard SPI interface function SPIreadWrite16bits(int16_t mosiData16) size_t byteCount = 2; static char mosiData[2]; static char misoData[2]; mosiData[0] = (char)((mosiData16 >> 8) & 0xFF); // MSByte mosiData[1] = (char)((mosiData16 >> 0) & 0xFF); // LSByte // // Arduino: begin critical section: noInterrupts() masks all interrupt sources; end critical section with interrupts() //~ noInterrupts(); // //~ digitalWrite(Scope_Trigger_Pin, LOW); // diagnostic Scope_Trigger_Pin // unsigned int numBytesTransferred = m_spi.write(mosiData, byteCount, misoData, byteCount); //~ m_spi.transfer(mosiData8_FF0000); //~ m_spi.transfer(mosiData16_00FF00); //~ m_spi.transfer(mosiData16_0000FF); // //~ digitalWrite(Scope_Trigger_Pin, HIGH); // diagnostic Scope_Trigger_Pin // // Arduino: begin critical section: noInterrupts() masks all interrupt sources; end critical section with interrupts() //~ interrupts(); // Optional Diagnostic function to print SPI transactions if (onSPIprint) { onSPIprint(byteCount, (uint8_t*)mosiData, (uint8_t*)misoData); } // // VERIFY: SPIwrite24bits print diagnostic information //cmdLine.serial().printf(" MOSI->")); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData8_FF0000 & 0xFF), HEX); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData16_00FF00 & 0xFF), HEX); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData16_0000FF & 0xFF), HEX); // hex dump mosiData[0..byteCount-1] #if 0 // HAS_MICROUSBSERIAL cmdLine_microUSBserial.serial().printf("\r\nSPI"); if (byteCount > 7) { cmdLine_microUSBserial.serial().printf(" byteCount:%d", byteCount); } cmdLine_microUSBserial.serial().printf(" MOSI->"); for (unsigned int byteIndex = 0; byteIndex < byteCount; byteIndex++) { cmdLine_microUSBserial.serial().printf(" 0x%2.2X", mosiData[byteIndex]); } // hex dump misoData[0..byteCount-1] cmdLine_microUSBserial.serial().printf(" MISO<-"); for (unsigned int byteIndex = 0; byteIndex < numBytesTransferred; byteIndex++) { cmdLine_microUSBserial.serial().printf(" 0x%2.2X", misoData[byteIndex]); } cmdLine_microUSBserial.serial().printf(" "); #endif #if 0 // HAS_DAPLINK_SERIAL cmdLine_DAPLINKserial.serial().printf("\r\nSPI"); if (byteCount > 7) { cmdLine_DAPLINKserial.serial().printf(" byteCount:%d", byteCount); } cmdLine_DAPLINKserial.serial().printf(" MOSI->"); for (unsigned int byteIndex = 0; byteIndex < byteCount; byteIndex++) { cmdLine_DAPLINKserial.serial().printf(" 0x%2.2X", mosiData[byteIndex]); } // hex dump misoData[0..byteCount-1] cmdLine_DAPLINKserial.serial().printf(" MISO<-"); for (unsigned int byteIndex = 0; byteIndex < numBytesTransferred; byteIndex++) { cmdLine_DAPLINKserial.serial().printf(" 0x%2.2X", misoData[byteIndex]); } cmdLine_DAPLINKserial.serial().printf(" "); #endif // VERIFY: DIAGNOSTIC: print MAX5715 device register write // TODO: MAX5715_print_register_verbose(mosiData8_FF0000, mosiData16_00FFFF); // TODO: print_verbose_SPI_diagnostic(mosiData16_FF00, mosiData16_00FF, misoData16_FF00, misoData16_00FF); // //int misoData16 = (misoData16_FF00 << 8) | misoData16_00FF; int misoData16 = (misoData[0] << 8) | misoData[1]; return misoData16; } // CODE GENERATOR: extern function requirement MAX11410::SPIreadWrite32bits // SPI read and write 32 bits // SPI interface to MAX11410 shift 32 bits mosiData into MAX11410 DIN // while simultaneously capturing 32 bits miso data from MAX11410 DOUT // int32_t MAX11410::SPIreadWrite32bits(int32_t mosiData32) { // CODE GENERATOR: extern function definition for function SPIreadWrite32bits // TODO1: CODE GENERATOR: extern function definition for standard SPI interface function SPIreadWrite32bits(int32_t mosiData32) size_t byteCount = 4; static char mosiData[4]; static char misoData[4]; mosiData[0] = (char)((mosiData32 >> 24) & 0xFF); // MSByte mosiData[1] = (char)((mosiData32 >> 16) & 0xFF); mosiData[2] = (char)((mosiData32 >> 8) & 0xFF); mosiData[3] = (char)((mosiData32 >> 0) & 0xFF); // LSByte // // Arduino: begin critical section: noInterrupts() masks all interrupt sources; end critical section with interrupts() //~ noInterrupts(); // //~ digitalWrite(Scope_Trigger_Pin, LOW); // diagnostic Scope_Trigger_Pin // unsigned int numBytesTransferred = m_spi.write(mosiData, byteCount, misoData, byteCount); //~ m_spi.transfer(mosiData8_FF0000); //~ m_spi.transfer(mosiData16_00FF00); //~ m_spi.transfer(mosiData16_0000FF); // //~ digitalWrite(Scope_Trigger_Pin, HIGH); // diagnostic Scope_Trigger_Pin // // Arduino: begin critical section: noInterrupts() masks all interrupt sources; end critical section with interrupts() //~ interrupts(); // Optional Diagnostic function to print SPI transactions if (onSPIprint) { onSPIprint(byteCount, (uint8_t*)mosiData, (uint8_t*)misoData); } // // VERIFY: SPIwrite24bits print diagnostic information //cmdLine.serial().printf(" MOSI->")); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData8_FF0000 & 0xFF), HEX); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData16_00FF00 & 0xFF), HEX); //cmdLine.serial().printf(" 0x")); //Serial.print( (mosiData16_0000FF & 0xFF), HEX); // hex dump mosiData[0..byteCount-1] #if 0 // HAS_MICROUSBSERIAL cmdLine_microUSBserial.serial().printf("\r\nSPI"); if (byteCount > 7) { cmdLine_microUSBserial.serial().printf(" byteCount:%d", byteCount); } cmdLine_microUSBserial.serial().printf(" MOSI->"); for (unsigned int byteIndex = 0; byteIndex < byteCount; byteIndex++) { cmdLine_microUSBserial.serial().printf(" 0x%2.2X", mosiData[byteIndex]); } // hex dump misoData[0..byteCount-1] cmdLine_microUSBserial.serial().printf(" MISO<-"); for (unsigned int byteIndex = 0; byteIndex < numBytesTransferred; byteIndex++) { cmdLine_microUSBserial.serial().printf(" 0x%2.2X", misoData[byteIndex]); } cmdLine_microUSBserial.serial().printf(" "); #endif #if 0 // HAS_DAPLINK_SERIAL cmdLine_DAPLINKserial.serial().printf("\r\nSPI"); if (byteCount > 7) { cmdLine_DAPLINKserial.serial().printf(" byteCount:%d", byteCount); } cmdLine_DAPLINKserial.serial().printf(" MOSI->"); for (unsigned int byteIndex = 0; byteIndex < byteCount; byteIndex++) { cmdLine_DAPLINKserial.serial().printf(" 0x%2.2X", mosiData[byteIndex]); } // hex dump misoData[0..byteCount-1] cmdLine_DAPLINKserial.serial().printf(" MISO<-"); for (unsigned int byteIndex = 0; byteIndex < numBytesTransferred; byteIndex++) { cmdLine_DAPLINKserial.serial().printf(" 0x%2.2X", misoData[byteIndex]); } cmdLine_DAPLINKserial.serial().printf(" "); #endif // VERIFY: DIAGNOSTIC: print MAX5715 device register write // TODO: MAX5715_print_register_verbose(mosiData8_FF0000, mosiData16_00FFFF); // TODO: print_verbose_SPI_diagnostic(mosiData16_FF00, mosiData16_00FF, misoData16_FF00, misoData16_00FF); // //int misoData32 = (misoData32_FF000000 << 24) | (misoData32_FF0000 << 16) | (misoData32_0000FF00 << 8) | misoData32_000000FF; int misoData32 = (misoData[0] << 24) | (misoData[1] << 16) | (misoData[2] << 8) | misoData[3]; return misoData32; } // CODE GENERATOR: class member function definitions //---------------------------------------- // Menu item '!' // Initialize device // // TODO1: #169 MAX11410 Self Test for Test Fixture Firmware // @test Init() expect 1 // // @future test xxxxxx // comment // // TODO1: #169 SelfTest support RegRead // @test group POR // verify initial register values (enabled by default) // @future test tinyTester.print("PART_ID value") // @test group POR RegRead(MAX11410::CMD_r001_0001_xxxx_xxxx_xxxx_xxxx_xxxx_xddd_PART_ID, buffer) expect 1 expect-buffer 0x000F02 // // @future test tinyTester.print("POR value 0x04 CMD_r000_0100_dddd_xddd_GP0_CTRL") // @test group POR RegRead(MAX11410::CMD_r000_0100_dddd_xddd_GP0_CTRL, buffer) expect 1 expect-buffer 0x00 // // @future test tinyTester.print("POR value 0x05 CMD_r000_0101_dddd_xddd_GP1_CTRL") // @test group POR RegRead(MAX11410::CMD_r000_0101_dddd_xddd_GP1_CTRL, buffer) expect 1 expect-buffer 0x00 // // @future test tinyTester.print("POR value 0x07 CMD_r000_0111_xddd_dddd_GP_SEQ_ADDR") // @test group POR RegRead(MAX11410::CMD_r000_0111_xddd_dddd_GP_SEQ_ADDR, buffer) expect 1 expect-buffer 0x00003a // // TODO1: #169 SelfTest support RegWrite and custom enum types // @future test tinyTester.print("POR value 0x08 CMD_r000_1000_x0dd_dddd_FILTER") // @test group POR RegRead(MAX11410::CMD_r000_1000_x0dd_dddd_FILTER, buffer) expect 1 expect-buffer 0x00 // could also be stated as RegRead(0x08, buffer) expect 1 expect-buffer 0x00 // // @future test tinyTester.print("POR value 0x09 CMD_r000_1001_dddd_dddd_CTRL") // @test group POR RegRead(MAX11410::CMD_r000_1001_dddd_dddd_CTRL, buffer) expect 1 expect-buffer 0x000001 // // @future test tinyTester.print("POR value 0x0a CMD_r000_1010_dddd_dddd_SOURCE") // @test group POR RegRead(MAX11410::CMD_r000_1010_dddd_dddd_SOURCE, buffer) expect 1 expect-buffer 0x00 // // @future test tinyTester.print("POR value 0x0b CMD_r000_1011_dddd_dddd_MUX_CTRL0") // @test group POR RegRead(MAX11410::CMD_r000_1011_dddd_dddd_MUX_CTRL0, buffer) expect 1 expect-buffer 0x0000ff // // @future test tinyTester.print("POR value 0x0c CMD_r000_1100_dddd_dddd_MUX_CTRL1") // @test group POR RegRead(MAX11410::CMD_r000_1100_dddd_dddd_MUX_CTRL1, buffer) expect 1 expect-buffer 0x0000ff // // @future test tinyTester.print("POR value 0x0d CMD_r000_1101_dddd_dddd_MUX_CTRL2") // @test group POR RegRead(MAX11410::CMD_r000_1101_dddd_dddd_MUX_CTRL2, buffer) expect 1 expect-buffer 0x00 // // @future test tinyTester.print("POR value 0x0e CMD_r000_1110_00ss_0ggg_PGA") // @test group POR RegRead(MAX11410::CMD_r000_1110_00ss_0ggg_PGA, buffer) expect 1 expect-buffer 0x00 // // @future test CMD_r000_1111_dddd_dddd_WAIT_EXT = 0x0f, //!< 0b0001111 // @future test CMD_r001_0000_xxxx_xxxx_WAIT_START = 0x10, //!< 0b0010000 // // @test group RES1KA0A1TOGND // measure a 1kohm resistor between (AIN0,AIN1) and AGND to verify ref2_v (disabled by default) // @test group RES1KA0A1TOGNDMORE // measure a 1kohm resistor between (AIN0,AIN1) and AGND to verify ref2_v in more detail // @test group RES1KA0A1TOGNDMORE tinyTester.print("measure a 1kohm resistor between (AIN0,AIN1) and AGND to verify ref2_v") // @test group RES1KA0A1TOGND tinyTester.settle_time_msec = 1000 // default 250 // @test group RES1KA0A1TOGND RegWrite(0x0C, 0xF1) expect 1 // *mux_ctrl1=0xf1 drives current source from AIN1 // // @test group RES1KA0A1TOGNDMORE RegWrite(0x0A, 0x03) expect 1 // *source=0x03 idac_mode=100uA, 1k resistor 0.1V // @test group RES1KA0A1TOGNDMORE tinyTester.print("idac_mode=100uA, 1k resistor 0.1V") // @test group RES1KA0A1TOGNDMORE tinyTester.Wait_Output_Settling() // @test group RES1KA0A1TOGNDMORE Measure_Voltage(0,10) expect 0.1 // @test group RES1KA0A1TOGNDMORE AINcode[0] expect (uint32_t)337731 within 33773 // idac_mode=100uA, 1k resistor 0.1V // // @test group RES1KA0A1TOGNDMORE RegWrite(0x0A, 0x0D) expect 1 // *source=0x0d idac_mode=800uA, 1k resistor 0.8V // @test group RES1KA0A1TOGNDMORE tinyTester.print("idac_mode=800uA, 1k resistor 0.8V") // @test group RES1KA0A1TOGNDMORE tinyTester.Wait_Output_Settling() // @test group RES1KA0A1TOGNDMORE Measure_Voltage(0,10) expect 0.8 // @test group RES1KA0A1TOGNDMORE AINcode[0] expect (uint32_t)2724467 within 33773 // idac_mode=800uA, 1k resistor 0.8V // // @test group RES1KA0A1TOGND RegWrite(0x0A, 0x0B) expect 1 // *source=0x0b idac_mode=400uA, 1k resistor 0.4V // @test group RES1KA0A1TOGNDMORE tinyTester.print("idac_mode=400uA, 1k resistor 0.4V") // @test group RES1KA0A1TOGND tinyTester.Wait_Output_Settling() // @test group RES1KA0A1TOGND Measure_Voltage(0,10) expect 0.4 // @test group RES1KA0A1TOGNDMORE AINcode[0] expect (uint32_t)1343163 within 33773 // idac_mode=400uA, 1k resistor 0.4V // // // // @test tinyTester.print("check filter register is writeable") // @future test tinyTester.print("this is a real mess dealing with the custom types") // @test RegWrite(0x08, 0x34) expect 1 // @future test tinyTester.print("error: no matching function for call to 'MaximTinyTester::FunctionCall_Expect(const char [18], uint8_t (&)(MAX11410::CMD_enum_t, uint32_t), MAX11410::CMD_enum_t, uint32_t, int)'") // @future test RegWrite(CMD_r000_1000_x0dd_dddd_FILTER, 0x34) expect 1 // @future test RegWrite(CMD_enum_t::CMD_r000_1000_x0dd_dddd_FILTER, 0x34) expect 1 // @future test RegWrite(MAX11410::CMD_enum_t::CMD_r000_1000_x0dd_dddd_FILTER, 0x34) expect 1 // // TODO1: #169 SelfTest support RegRead // @test tinyTester.print("check filter register is readable") // @test RegRead(0x08, buffer) expect 1 expect-buffer 0x34 // @future test RegRead(MAX11410::CMD_enum_t::CMD_r000_1000_x0dd_dddd_FILTER, &buffer) expect 1 expect-buffer 0x34 // // @test tinyTester.settle_time_msec = 250 // default 250 // @test tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // @test tinyTester.input_timeout_time_msec = 250 // default 250 // @test tinyTester.settle_time_msec = 20 // default 250 // @test tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test tinyTester.input_timeout_time_msec = 100 // default 250 // // @test tinyTester.Wait_Output_Settling() // // @future test tinyTester.DigitalIn_Read_Expect_WarnOnly(DigitalIn& digitalInPin, const char* pinName, int expect_result, const char *expect_description) // // TODO1: #169 SelfTest support tinyTester.max541.Set_Code // @future test tinyTester.max541.Set_Code(0x8000) // // @return 1 on success; 0 on failure uint8_t MAX11410::Init(void) { //---------------------------------------- // AIN0-AIN1 reference voltage, in Volts ref0_v = 2.500; //---------------------------------------- // REF1P-REF1N reference resistance, in Ohms ref1_v = 4999; //---------------------------------------- // REF2P-REF2N reference voltage, in Volts ref2_v = 2.500; //---------------------------------------- // AVDD-AGND supply voltage, in Volts avdd_v = 3.300; //---------------------------------------- // RTD Resistance measurement; Thermocouple Cold Junction, in Ohms rtd_ohm = 1000.0; //---------------------------------------- // Temperature calculated from RTD Resistance; Thermocouple Cold Junction, in degrees C rtd_degc = 25.0; //---------------------------------------- // shadow of register ctrl CMD_r000_1001_dddd_dddd_CTRL ctrl = 0x01; //---------------------------------------- // set by Configure_PGA gain index register pga CMD_r000_1110_00ss_0ggg_PGA pgaGain = 1; //---------------------------------------- // When driver polls status of a pin signal or a register status bit, // and there is no device physically connected, the driver must // be able to halt and report failure if too many tries. Each attempt // counts down until loop_limit is reached or exceeded. // // If driver seems to hang or takes too long to decide that device // is not connected, reduce the futility countdown limit value. // // If driver sometimes works but sometimes intermittently fails to // recognize device is attached, increase the futility countdown limit. loop_limit = 30; //---------------------------------------- // timing delay after enable RTD bias current in Measure_RTD() rtd_ms = 100; //---------------------------------------- // filter register configuration in Measure_RTD() -- 0x34 LINEF_11_SINC4 RATE_0100 output data rate 60SPS rtd_filter = 0x34; //---------------------------------------- // ctrl register configuration in Measure_RTD() -- 0x40 unipolar, 0x01 REF_SEL_001_REF1P_REF1N rtd_ctrl = 0x41; //---------------------------------------- // source register configuration in Measure_RTD() -- 0x0B IDAC_MODE_1011_400uA rtd_source = 0x0B; //---------------------------------------- // pga register configuration in Measure_RTD() -- 0x21 SIG_PATH_10_PGA GAIN_001_2 rtd_pga = 0x21; //---------------------------------------- // list of registers to be read by menu item * with no arguments static MAX11410::MAX11410_CMD_enum_t readAllStatusListValues[] = { MAX11410::CMD_r000_0000_xxxx_xxdd_PD, MAX11410::CMD_r000_0001_xddd_xxdd_CONV_START, MAX11410::CMD_r000_0010_xddd_dddd_SEQ_START, MAX11410::CMD_r000_0011_xxxx_xddd_CAL_START, MAX11410::CMD_r000_0100_dddd_xddd_GP0_CTRL, MAX11410::CMD_r000_0101_dddd_xddd_GP1_CTRL, MAX11410::CMD_r000_0110_xddd_xxdd_GP_CONV, MAX11410::CMD_r000_0111_xddd_dddd_GP_SEQ_ADDR, MAX11410::CMD_r000_1000_x0dd_dddd_FILTER, MAX11410::CMD_r000_1001_dddd_dddd_CTRL, MAX11410::CMD_r000_1010_dddd_dddd_SOURCE, MAX11410::CMD_r000_1011_dddd_dddd_MUX_CTRL0, MAX11410::CMD_r000_1100_dddd_dddd_MUX_CTRL1, MAX11410::CMD_r000_1101_dddd_dddd_MUX_CTRL2, MAX11410::CMD_r000_1110_00ss_0ggg_PGA, MAX11410::CMD_r000_1111_dddd_dddd_WAIT_EXT, MAX11410::CMD_r001_0000_xxxx_xxxx_WAIT_START, }; readAllStatusList = readAllStatusListValues; //---------------------------------------- // number of registers to be read by menu item * with no arguments readAllStatusListLen = 17; //---------------------------------------- // Device ID Validation const uint32_t part_id_expect = 0x000F02; uint32_t part_id_readback; RegRead(CMD_r001_0001_xxxx_xxxx_xxxx_xxxx_xxxx_xddd_PART_ID, &part_id_readback); if (part_id_readback != part_id_expect) return 0; //---------------------------------------- // write8 0x00 PD = 0x03 (Reset Registers; enter Standby mode) RegWrite(CMD_r000_0000_xxxx_xxdd_PD, PD_11_Reset); //---------------------------------------- // write8 0x00 PD = 0x00 (NOP) RegWrite(CMD_r000_0000_xxxx_xxdd_PD, PD_00_Normal); //---------------------------------------- // success return 1; } //---------------------------------------- // Return the physical voltage corresponding to conversion result, // for unipolar mode. // Does not perform any offset or gain correction. // // @pre CTRL::U_BN = 1 -- Unipolar mode // @pre CTRL::FORMAT = x // @pre VRef = Voltage of REF input, in Volts // @param[in] value_u24: raw 24-bit MAX11410 code (right justified). // @return physical voltage corresponding to MAX11410 code. // // @test group UNIPOLAR // Verify function VoltageOfCode_Unipolar // @test group UNIPOLAR tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group UNIPOLAR Configure_CTRL_REF(2) expect 1 // These tests require REF2 = 2.500V // @test group UNIPOLAR Configure_PGA(0,0) expect 1 // These tests require PGA gain=1 // @test group UNIPOLAR VoltageOfCode_Unipolar(0xFFFFFF) expect 2.500 within 0.030 // Full Scale // @test group UNIPOLAR VoltageOfCode_Unipolar(0xFFFFFE) expect 2.500 // Full Scale // @test group UNIPOLAR VoltageOfCode_Unipolar(0xCCCCCC) expect 2.000 // Two Volts // @test group UNIPOLAR VoltageOfCode_Unipolar(0xC00000) expect 1.875 // 75% Scale // @test group UNIPOLAR VoltageOfCode_Unipolar(0x800000) expect 1.250 // Mid Scale // @test group UNIPOLAR VoltageOfCode_Unipolar(0x666666) expect 1.000 // One Volt // @test group UNIPOLAR VoltageOfCode_Unipolar(0x400000) expect 0.625 // 25% Scale // @test group UNIPOLAR VoltageOfCode_Unipolar(0x0A3D70) expect 0.100 // 100mV // @test group UNIPOLAR VoltageOfCode_Unipolar(0x000064) expect 0.000014901162 // 100 LSB // @test group UNIPOLAR VoltageOfCode_Unipolar(0x00000A) expect 0.0000014901162 // Ten LSB // @test group UNIPOLAR VoltageOfCode_Unipolar(0x000003) expect 0.00000044703483 // Three LSB // @test group UNIPOLAR VoltageOfCode_Unipolar(0x000002) expect 0.00000029802326 // Two LSB // @test group UNIPOLAR VoltageOfCode_Unipolar(0x000001) expect 0.00000014901162 // One LSB // @test group UNIPOLAR VoltageOfCode_Unipolar(0x000000) expect 0.0 // Zero Scale // @test group UNIPOLAR tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::VoltageOfCode_Unipolar(uint32_t value_u24) { //---------------------------------------- // Linear map min and max endpoints double VRef = ref2_v; uint8_t ref_sel = (ctrl & 0x03); // MAX11410_REF_SEL_enum_t switch(ref_sel) { case REF_SEL_000_AIN0_AIN1: VRef = ref0_v; break; case REF_SEL_001_REF1P_REF1N: VRef = ref1_v; break; case REF_SEL_010_REF2P_REF2N: VRef = ref2_v; break; case REF_SEL_011_AVDD_AGND: VRef = avdd_v; break; case REF_SEL_100_AIN0_AGND: VRef = ref0_v; break; case REF_SEL_101_REF1P_AGND: VRef = ref1_v; break; case REF_SEL_110_REF2P_AGND: VRef = ref2_v; break; case REF_SEL_111_AVDD_AGND: VRef = avdd_v; break; } double MaxScaleVoltage = VRef; // voltage of maximum code 0xffffff double MinScaleVoltage = 0.0; // voltage of minimum code 0x000 const uint32_t FULL_SCALE_CODE_24BIT = 0xffffff; const uint32_t MaxCode = FULL_SCALE_CODE_24BIT; const uint32_t MinCode = 0x000; double codeFraction = ((double)value_u24 - MinCode) / (MaxCode - MinCode + 1); return (MinScaleVoltage + ((MaxScaleVoltage - MinScaleVoltage) * codeFraction)) / pgaGain; } //---------------------------------------- // Return the physical voltage corresponding to conversion result, // when conversion format is Bipolar mode, offset binary. // Does not perform any offset or gain correction. // // @pre CTRL::U_BN = 0 -- Bipolar mode // @pre CTRL::FORMAT = 1 -- offset binary // @pre VRef = Voltage of REF input, in Volts // @param[in] value_u24: raw 24-bit MAX11410 code (right justified). // @return physical voltage corresponding to MAX11410 code. // // @test group BIPOB // Verify function VoltageOfCode_Bipolar_OffsetBinary // @test group BIPOB tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group BIPOB Configure_CTRL_REF(2) expect 1 // These tests require REF2 = 2.500V // @test group BIPOB Configure_PGA(0,0) expect 1 // These tests require PGA gain=1 // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0xFFFFFF) expect 2.5 within 0.030 // Full Scale // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0xFFFFFE) expect 2.5 // Full Scale // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0xC00000) expect 1.25 // Mid Scale // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x800003) expect 0.00000894069671 // Three LSB // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x800002) expect 0.00000596046447 // Two LSB // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x800001) expect 0.0000029802326 // One LSB // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x800000) expect 0.0 // Zero Scale // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x7FFFFF) expect -0.0000029802326 // Negative One LSB // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x7FFFFE) expect -0.0000059604644 // Negative Two LSB // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x7FFFFD) expect -0.0000089406967 // Negative Three LSB // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x400000) expect -1.25 // Negative Mid Scale // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x000001) expect -2.5 // Negative Full Scale // @test group BIPOB VoltageOfCode_Bipolar_OffsetBinary(0x000000) expect -2.5 // Negative Full Scale // @test group BIPOB tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::VoltageOfCode_Bipolar_OffsetBinary(uint32_t value_u24) { //---------------------------------------- // Linear map min and max endpoints double VRef = ref2_v; uint8_t ref_sel = (ctrl & 0x03); // MAX11410_REF_SEL_enum_t switch(ref_sel) { case REF_SEL_000_AIN0_AIN1: VRef = ref0_v; break; case REF_SEL_001_REF1P_REF1N: VRef = ref1_v; break; case REF_SEL_010_REF2P_REF2N: VRef = ref2_v; break; case REF_SEL_011_AVDD_AGND: VRef = avdd_v; break; case REF_SEL_100_AIN0_AGND: VRef = ref0_v; break; case REF_SEL_101_REF1P_AGND: VRef = ref1_v; break; case REF_SEL_110_REF2P_AGND: VRef = ref2_v; break; case REF_SEL_111_AVDD_AGND: VRef = avdd_v; break; } double MaxScaleVoltage = 2*VRef; // voltage of maximum code 0x7fffff double MinScaleVoltage = 0; // voltage of minimum code 0x800000; const uint32_t FULL_SCALE_CODE_24BIT = 0x7fffff; const uint32_t MaxCode = FULL_SCALE_CODE_24BIT; const int32_t CodeSpan = 0x1000000; const uint32_t MinCode = 0x800000; double codeFraction = ((double)value_u24 - MinCode) / CodeSpan; return (MinScaleVoltage + ((MaxScaleVoltage - MinScaleVoltage) * codeFraction)) / pgaGain; } //---------------------------------------- // Return the physical voltage corresponding to conversion result, // when conversion format is Bipolar mode, 2's complement. // Does not perform any offset or gain correction. // // @pre CTRL::U_BN = 0 -- Bipolar mode // @pre CTRL::FORMAT = 0 -- 2's complement // @pre VRef = Voltage of REF input, in Volts // @param[in] value_u24: raw 24-bit MAX11410 code (right justified). // @return physical voltage corresponding to MAX11410 code. // // @test group BIP2C // Verify function VoltageOfCode_Bipolar_2sComplement // @test group BIP2C tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group BIP2C Configure_CTRL_REF(2) expect 1 // These tests require REF2 = 2.500V // @test group BIP2C Configure_PGA(0,0) expect 1 // These tests require PGA gain=1 // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x7FFFFF) expect 2.500 within 0.030 // Full Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x7FFFFE) expect 2.500 // Full Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x666666) expect 2.000 // Two Volts // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x600000) expect 1.875 // 75% Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x400000) expect 1.250 // Mid Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x333333) expect 1.000 // One Volt // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x200000) expect 0.625 // 25% Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x051eb8) expect 0.100 // 100mV // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x000003) expect 0.00000894069671 // Three LSB // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x000002) expect 0.00000596046447 // Two LSB // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x000001) expect 0.0000029802326 // One LSB // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x000000) expect 0.0 // Zero Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xFFFFFF) expect -0.0000029802326 // Negative One LSB // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xFFFFFE) expect -0.0000059604644 // Negative Two LSB // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xFFFFFD) expect -0.0000089406967 // Negative Three LSB // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xFAE148) expect -0.100 // Negative 100mV // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xE00000) expect -0.625 // Negative 25% Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xCCCCCD) expect -1.000 // Negative One Volt // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xC00000) expect -1.250 // Negative Mid Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0xA00000) expect -1.875 // Negative 75% Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x99999A) expect -2.000 // Negative Two Volts // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x800001) expect -2.500 // Negative Full Scale // @test group BIP2C VoltageOfCode_Bipolar_2sComplement(0x800000) expect -2.500 // Negative Full Scale // @test group BIP2C tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::VoltageOfCode_Bipolar_2sComplement(uint32_t value_u24) { //---------------------------------------- // Linear map min and max endpoints double VRef = ref2_v; uint8_t ref_sel = (ctrl & 0x03); // MAX11410_REF_SEL_enum_t switch(ref_sel) { case REF_SEL_000_AIN0_AIN1: VRef = ref0_v; break; case REF_SEL_001_REF1P_REF1N: VRef = ref1_v; break; case REF_SEL_010_REF2P_REF2N: VRef = ref2_v; break; case REF_SEL_011_AVDD_AGND: VRef = avdd_v; break; case REF_SEL_100_AIN0_AGND: VRef = ref0_v; break; case REF_SEL_101_REF1P_AGND: VRef = ref1_v; break; case REF_SEL_110_REF2P_AGND: VRef = ref2_v; break; case REF_SEL_111_AVDD_AGND: VRef = avdd_v; break; } double MaxScaleVoltage = 2 * VRef; // voltage of maximum code 0x7fffff double MinScaleVoltage = 0; // voltage of minimum code 0x800000 const int32_t FULL_SCALE_CODE_24BIT_2S_COMPLEMENT = 0x7fffff; const int32_t SIGN_BIT_24BIT_2S_COMPLEMENT = 0x800000; if (value_u24 >= SIGN_BIT_24BIT_2S_COMPLEMENT) { value_u24 = value_u24 - (2 * SIGN_BIT_24BIT_2S_COMPLEMENT); } const int32_t MaxCode = FULL_SCALE_CODE_24BIT_2S_COMPLEMENT; const int32_t CodeSpan = 0x1000000; const int32_t MinCode = 0; double codeFraction = ((double)((int32_t)value_u24) - MinCode) / CodeSpan; return (MinScaleVoltage + ((MaxScaleVoltage - MinScaleVoltage) * codeFraction)) / pgaGain; } //---------------------------------------- // Return the physical voltage corresponding to conversion result, // when conversion format is determined by the CTRL register. // Does not perform any offset or gain correction. // // @pre CTRL::U_BN and CTRL::FORMAT = 0 select offset binary, 2's complement, or straight binary // @pre VRef = Voltage of REF input, in Volts // @param[in] value_u24: raw 24-bit MAX11410 code (right justified). // @return physical voltage corresponding to MAX11410 code. double MAX11410::VoltageOfCode(uint32_t value_u24) { //---------------------------------------- // Determine format from CTRL register U_BN and FORMAT uint8_t u_bn_bitmask = (1 << 6); uint8_t format_bitmask = (1 << 5); if ((ctrl & u_bn_bitmask) != 0) { return VoltageOfCode_Unipolar(value_u24); } if ((ctrl & format_bitmask) != 0) { return VoltageOfCode_Bipolar_OffsetBinary(value_u24); } return VoltageOfCode_Bipolar_2sComplement(value_u24); } //---------------------------------------- // Write a MAX11410 register. // // CMDOP_1aaa_aaaa_ReadRegister bit is cleared 0 indicating a write operation. // // MAX11410 register length can be determined by function RegSize. // // For 8-bit register size: // // SPI 16-bit transfer // // SPI MOSI = 0aaa_aaaa_dddd_dddd // // SPI MISO = xxxx_xxxx_xxxx_xxxx // // For 16-bit register size: // // SPI 24-bit or 32-bit transfer // // SPI MOSI = 0aaa_aaaa_dddd_dddd_dddd_dddd // // SPI MISO = xxxx_xxxx_xxxx_xxxx_xxxx_xxxx // // For 24-bit register size: // // SPI 32-bit transfer // // SPI MOSI = 0aaa_aaaa_dddd_dddd_dddd_dddd_dddd_dddd // // SPI MISO = xxxx_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx // // @return 1 on success; 0 on failure uint8_t MAX11410::RegWrite(MAX11410_CMD_enum_t commandByte, uint32_t regData) { //---------------------------------------- // switch based on register address size RegSize(commandByte) commandByte = (MAX11410_CMD_enum_t)((commandByte &~ CMDOP_1aaa_aaaa_ReadRegister) & 0xFF); switch(RegSize(commandByte)) { case 8: // 8-bit register size { // SPI 16-bit transfer // SPI MOSI = 0aaa_aaaa_dddd_dddd // SPI MISO = xxxx_xxxx_xxxx_xxxx int16_t mosiData16 = ((int16_t)commandByte << 8) | ((int16_t)regData & 0xFF); SPIoutputCS(0); SPIwrite16bits(mosiData16); SPIoutputCS(1); // if (commandByte == CMD_r000_0011_xxxx_xddd_CAL_START) { // after RegWrite CMD_r000_0011_xxxx_xddd_CAL_START, poll status until 0x000004 CAL_RDY RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); // wait until /* MAX11410_STATUS_enum_t:: */ STATUS_000004_CAL_RDY indicates calibration is ready // A bad SPI interface can cause bit slippage, which makes this loop get stuck. Expect *PART_ID? = 0x000F02 // while ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0) { // possible infinite loop; need a timeout or futility countdown to escape for (int futility_countdown = loop_limit; ((futility_countdown > 0) && ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000004_CAL_RDY) == 0)); futility_countdown--) { RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); } } } break; case 16: // 16-bit register size #warning "Not Verified Yet: MAX11410::RegWrite 16-bit SPIreadWrite32bits" { // SPI 24-bit or 32-bit transfer // SPI MOSI = 0aaa_aaaa_dddd_dddd_dddd_dddd // SPI MISO = xxxx_xxxx_xxxx_xxxx_xxxx_xxxx // SPI MOSI = 0aaa_aaaa_dddd_dddd_dddd_dddd_0000_0000 // SPI MISO = xxxx_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx int32_t mosiData32 = ((int32_t)commandByte << 24) | (((int32_t)regData & 0xFFFF) << 8); SPIoutputCS(0); SPIreadWrite32bits(mosiData32); SPIoutputCS(1); } break; case 24: // 24-bit register size { // SPI 32-bit transfer // SPI MOSI = 0aaa_aaaa_dddd_dddd_dddd_dddd_dddd_dddd // SPI MISO = xxxx_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx_xxxx int32_t mosiData32 = ((int32_t)commandByte << 24) | ((int32_t)regData & 0x00FFFFFF); SPIoutputCS(0); SPIreadWrite32bits(mosiData32); SPIoutputCS(1); } break; } //---------------------------------------- // success return 1; } //---------------------------------------- // Read an 8-bit MAX11410 register // // CMDOP_1aaa_aaaa_ReadRegister bit is set 1 indicating a read operation. // // MAX11410 register length can be determined by function RegSize. // // For 8-bit register size: // // SPI 16-bit transfer // // SPI MOSI = 1aaa_aaaa_0000_0000 // // SPI MISO = xxxx_xxxx_dddd_dddd // // For 16-bit register size: // // SPI 24-bit or 32-bit transfer // // SPI MOSI = 1aaa_aaaa_0000_0000_0000_0000 // // SPI MISO = xxxx_xxxx_dddd_dddd_dddd_dddd // // For 24-bit register size: // // SPI 32-bit transfer // // SPI MOSI = 1aaa_aaaa_0000_0000_0000_0000_0000_0000 // // SPI MISO = xxxx_xxxx_dddd_dddd_dddd_dddd_dddd_dddd // // // @return 1 on success; 0 on failure uint8_t MAX11410::RegRead(MAX11410_CMD_enum_t commandByte, uint32_t* ptrRegData) { //---------------------------------------- // switch based on register address size RegSize(regAddress) commandByte = (MAX11410_CMD_enum_t)((commandByte &~ CMDOP_1aaa_aaaa_ReadRegister) & 0xFF); switch(RegSize(commandByte)) { case 8: // 8-bit register size { // SPI 16-bit transfer // SPI MOSI = 1aaa_aaaa_0000_0000 // SPI MISO = xxxx_xxxx_dddd_dddd int16_t mosiData16 = ((CMDOP_1aaa_aaaa_ReadRegister | (int16_t)commandByte) << 8) | ((int16_t)0); SPIoutputCS(0); int16_t misoData16 = SPIreadWrite16bits(mosiData16); SPIoutputCS(1); (*ptrRegData) = (misoData16 & 0x00FF); } break; case 16: // 16-bit register size #warning "Not Verified Yet: MAX11410::RegRead 16-bit SPIreadWrite32bits" { // SPI 24-bit or 32-bit transfer // SPI MOSI = 1aaa_aaaa_0000_0000_0000_0000 // SPI MISO = xxxx_xxxx_dddd_dddd_dddd_dddd // SPI MOSI = 1aaa_aaaa_0000_0000_0000_0000_0000_0000 // SPI MISO = xxxx_xxxx_dddd_dddd_dddd_dddd_xxxx_xxxx int32_t mosiData32 = ((CMDOP_1aaa_aaaa_ReadRegister | (int32_t)commandByte) << 24); SPIoutputCS(0); int32_t misoData32 = SPIreadWrite32bits(mosiData32); SPIoutputCS(1); (*ptrRegData) = ((misoData32 >> 8) & 0x00FFFF); } break; case 24: // 24-bit register size { // SPI 32-bit transfer // SPI MOSI = 1aaa_aaaa_0000_0000_0000_0000_0000_0000 // SPI MISO = xxxx_xxxx_dddd_dddd_dddd_dddd_dddd_dddd int32_t mosiData32 = ((CMDOP_1aaa_aaaa_ReadRegister | (int32_t)commandByte) << 24); SPIoutputCS(0); int32_t misoData32 = SPIreadWrite32bits(mosiData32); SPIoutputCS(1); (*ptrRegData) = (misoData32 & 0x00FFFFFF); } break; } //---------------------------------------- // success return 1; } //---------------------------------------- // Return the size of a MAX11410 register // // @return 8 for 8-bit, 16 for 16-bit, 24 for 24-bit, else 0 for undefined register size uint8_t MAX11410::RegSize(MAX11410_CMD_enum_t commandByte) { //---------------------------------------- // switch based on register address value regAddress commandByte = (MAX11410_CMD_enum_t)((commandByte &~ CMDOP_1aaa_aaaa_ReadRegister) & 0xFF); switch(commandByte) { default: return 0; // undefined register size case CMD_r000_0000_xxxx_xxdd_PD: case CMD_r000_0001_xddd_xxdd_CONV_START: case CMD_r000_0010_xddd_dddd_SEQ_START: case CMD_r000_0011_xxxx_xddd_CAL_START: case CMD_r000_0100_dddd_xddd_GP0_CTRL: case CMD_r000_0101_dddd_xddd_GP1_CTRL: case CMD_r000_0110_xddd_xxdd_GP_CONV: case CMD_r000_0111_xddd_dddd_GP_SEQ_ADDR: case CMD_r000_1000_x0dd_dddd_FILTER: case CMD_r000_1001_dddd_dddd_CTRL: case CMD_r000_1010_dddd_dddd_SOURCE: case CMD_r000_1011_dddd_dddd_MUX_CTRL0: case CMD_r000_1100_dddd_dddd_MUX_CTRL1: case CMD_r000_1101_dddd_dddd_MUX_CTRL2: case CMD_r000_1110_00ss_0ggg_PGA: case CMD_r000_1111_dddd_dddd_WAIT_EXT: case CMD_r001_0000_xxxx_xxxx_WAIT_START: return 8; // 8-bit register size case CMD_r001_0001_xxxx_xxxx_xxxx_xxxx_xxxx_xddd_PART_ID: case CMD_r001_0010_xxxx_xxxx_dddd_xxdd_dddd_dddd_SYSC_SEL: case CMD_r001_0011_dddd_dddd_dddd_dddd_dddd_dddd_SYS_OFF_A: case CMD_r001_0100_dddd_dddd_dddd_dddd_dddd_dddd_SYS_OFF_B: case CMD_r001_0101_dddd_dddd_dddd_dddd_dddd_dddd_SYS_GAIN_A: case CMD_r001_0110_dddd_dddd_dddd_dddd_dddd_dddd_SYS_GAIN_B: case CMD_r001_0111_dddd_dddd_dddd_dddd_dddd_dddd_SELF_OFF: case CMD_r001_1000_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_1: case CMD_r001_1001_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_2: case CMD_r001_1010_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_4: case CMD_r001_1011_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_8: case CMD_r001_1100_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_16: case CMD_r001_1101_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_32: case CMD_r001_1110_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_64: case CMD_r001_1111_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_128: case CMD_r010_0000_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH0: case CMD_r010_0001_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH1: case CMD_r010_0010_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH2: case CMD_r010_0011_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH3: case CMD_r010_0100_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH4: case CMD_r010_0101_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH5: case CMD_r010_0110_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH6: case CMD_r010_0111_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH7: case CMD_r010_1000_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH0: case CMD_r010_1001_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH1: case CMD_r010_1010_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH2: case CMD_r010_1011_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH3: case CMD_r010_1100_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH4: case CMD_r010_1101_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH5: case CMD_r010_1110_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH6: case CMD_r010_1111_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH7: case CMD_r011_0000_dddd_dddd_dddd_dddd_dddd_dddd_DATA0: case CMD_r011_0001_dddd_dddd_dddd_dddd_dddd_dddd_DATA1: case CMD_r011_0010_dddd_dddd_dddd_dddd_dddd_dddd_DATA2: case CMD_r011_0011_dddd_dddd_dddd_dddd_dddd_dddd_DATA3: case CMD_r011_0100_dddd_dddd_dddd_dddd_dddd_dddd_DATA4: case CMD_r011_0101_dddd_dddd_dddd_dddd_dddd_dddd_DATA5: case CMD_r011_0110_dddd_dddd_dddd_dddd_dddd_dddd_DATA6: case CMD_r011_0111_dddd_dddd_dddd_dddd_dddd_dddd_DATA7: case CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS: case CMD_r011_1001_dddd_dddd_dddd_dddd_dxxd_dddd_STATUS_IE: return 24; // 24-bit register size case CMD_r011_1010_xaaa_aaaa_dddd_dddd_UC_0: case CMD_r011_1011_xaaa_aaaa_dddd_dddd_UC_1: case CMD_r011_1100_xaaa_aaaa_dddd_dddd_UC_2: case CMD_r011_1101_xaaa_aaaa_dddd_dddd_UC_3: case CMD_r011_1110_xaaa_aaaa_dddd_dddd_UC_4: case CMD_r011_1111_xaaa_aaaa_dddd_dddd_UC_5: case CMD_r100_0000_xaaa_aaaa_dddd_dddd_UC_6: case CMD_r100_0001_xaaa_aaaa_dddd_dddd_UC_7: case CMD_r100_0010_xaaa_aaaa_dddd_dddd_UC_8: case CMD_r100_0011_xaaa_aaaa_dddd_dddd_UC_9: case CMD_r100_0100_xaaa_aaaa_dddd_dddd_UC_10: case CMD_r100_0101_xaaa_aaaa_dddd_dddd_UC_11: case CMD_r100_0110_xaaa_aaaa_dddd_dddd_UC_12: case CMD_r100_0111_xaaa_aaaa_dddd_dddd_UC_13: case CMD_r100_1000_xaaa_aaaa_dddd_dddd_UC_14: case CMD_r100_1001_xaaa_aaaa_dddd_dddd_UC_15: case CMD_r100_1010_xaaa_aaaa_dddd_dddd_UC_16: case CMD_r100_1011_xaaa_aaaa_dddd_dddd_UC_17: case CMD_r100_1100_xaaa_aaaa_dddd_dddd_UC_18: case CMD_r100_1101_xaaa_aaaa_dddd_dddd_UC_19: case CMD_r100_1110_xaaa_aaaa_dddd_dddd_UC_20: case CMD_r100_1111_xaaa_aaaa_dddd_dddd_UC_21: case CMD_r101_0000_xaaa_aaaa_dddd_dddd_UC_22: case CMD_r101_0001_xaaa_aaaa_dddd_dddd_UC_23: case CMD_r101_0010_xaaa_aaaa_dddd_dddd_UC_24: case CMD_r101_0011_xaaa_aaaa_dddd_dddd_UC_25: case CMD_r101_0100_xaaa_aaaa_dddd_dddd_UC_26: case CMD_r101_0101_xaaa_aaaa_dddd_dddd_UC_27: case CMD_r101_0110_xaaa_aaaa_dddd_dddd_UC_28: case CMD_r101_0111_xaaa_aaaa_dddd_dddd_UC_29: case CMD_r101_1000_xaaa_aaaa_dddd_dddd_UC_30: case CMD_r101_1001_xaaa_aaaa_dddd_dddd_UC_31: case CMD_r101_1010_xaaa_aaaa_dddd_dddd_UC_32: case CMD_r101_1011_xaaa_aaaa_dddd_dddd_UC_33: case CMD_r101_1100_xaaa_aaaa_dddd_dddd_UC_34: case CMD_r101_1101_xaaa_aaaa_dddd_dddd_UC_35: case CMD_r101_1110_xaaa_aaaa_dddd_dddd_UC_36: case CMD_r101_1111_xaaa_aaaa_dddd_dddd_UC_37: case CMD_r110_0000_xaaa_aaaa_dddd_dddd_UC_38: case CMD_r110_0001_xaaa_aaaa_dddd_dddd_UC_39: case CMD_r110_0010_xaaa_aaaa_dddd_dddd_UC_40: case CMD_r110_0011_xaaa_aaaa_dddd_dddd_UC_41: case CMD_r110_0100_xaaa_aaaa_dddd_dddd_UC_42: case CMD_r110_0101_xaaa_aaaa_dddd_dddd_UC_43: case CMD_r110_0110_xaaa_aaaa_dddd_dddd_UC_44: case CMD_r110_0111_xaaa_aaaa_dddd_dddd_UC_45: case CMD_r110_1000_xaaa_aaaa_dddd_dddd_UC_46: case CMD_r110_1001_xaaa_aaaa_dddd_dddd_UC_47: case CMD_r110_1010_xaaa_aaaa_dddd_dddd_UC_48: case CMD_r110_1011_xaaa_aaaa_dddd_dddd_UC_49: case CMD_r110_1100_xaaa_aaaa_dddd_dddd_UC_50: case CMD_r110_1101_xaaa_aaaa_dddd_dddd_UC_51: case CMD_r110_1110_xaaa_aaaa_dddd_dddd_UC_52: case CMD_r110_1111_xxxx_xxxx_xaaa_aaaa_UCADDR: return 16; // 16-bit register size } } //---------------------------------------- // Decode operation from commandByte // // @return operation such as idle, read register, write register, etc. MAX11410::MAX11410_CMDOP_enum_t MAX11410::DecodeCommand(MAX11410_CMD_enum_t commandByte) { //---------------------------------------- // decode operation from command byte switch (commandByte & 0x80) { default: case CMDOP_0aaa_aaaa_WriteRegister: return CMDOP_0aaa_aaaa_WriteRegister; case CMDOP_1aaa_aaaa_ReadRegister: return CMDOP_1aaa_aaaa_ReadRegister; } } //---------------------------------------- // Return the address field of a MAX11410 register // // @return register address field as given in datasheet uint8_t MAX11410::RegAddrOfCommand(MAX11410_CMD_enum_t commandByte) { //---------------------------------------- // extract register address value from command byte return (uint8_t)((commandByte &~ CMDOP_1aaa_aaaa_ReadRegister) & 0xFF); } //---------------------------------------- // Test whether a command byte is a register read command // // @return true if command byte is a register read command uint8_t MAX11410::IsRegReadCommand(MAX11410_CMD_enum_t commandByte) { //---------------------------------------- // Test whether a command byte is a register read command return (commandByte & CMDOP_1aaa_aaaa_ReadRegister) ? 1 : 0; } //---------------------------------------- // Return the name of a MAX11410 register // // @return null-terminated constant C string containing register name or empty string const char* MAX11410::RegName(MAX11410_CMD_enum_t commandByte) { //---------------------------------------- // switch based on register address value regAddress commandByte = (MAX11410_CMD_enum_t)((commandByte &~ CMDOP_1aaa_aaaa_ReadRegister) & 0xFF); switch(commandByte) { default: return ""; // undefined register case CMD_r000_0000_xxxx_xxdd_PD: return "PD"; case CMD_r000_0001_xddd_xxdd_CONV_START: return "CONV_START"; case CMD_r000_0010_xddd_dddd_SEQ_START: return "SEQ_START"; case CMD_r000_0011_xxxx_xddd_CAL_START: return "CAL_START"; case CMD_r000_0100_dddd_xddd_GP0_CTRL: return "GP0_CTRL"; case CMD_r000_0101_dddd_xddd_GP1_CTRL: return "GP1_CTRL"; case CMD_r000_0110_xddd_xxdd_GP_CONV: return "GP_CONV"; case CMD_r000_0111_xddd_dddd_GP_SEQ_ADDR: return "GP_SEQ_ADDR"; case CMD_r000_1000_x0dd_dddd_FILTER: return "FILTER"; case CMD_r000_1001_dddd_dddd_CTRL: return "CTRL"; case CMD_r000_1010_dddd_dddd_SOURCE: return "SOURCE"; case CMD_r000_1011_dddd_dddd_MUX_CTRL0: return "MUX_CTRL0"; case CMD_r000_1100_dddd_dddd_MUX_CTRL1: return "MUX_CTRL1"; case CMD_r000_1101_dddd_dddd_MUX_CTRL2: return "MUX_CTRL2"; case CMD_r000_1110_00ss_0ggg_PGA: return "PGA"; case CMD_r000_1111_dddd_dddd_WAIT_EXT: return "WAIT_EXT"; case CMD_r001_0000_xxxx_xxxx_WAIT_START: return "WAIT_START"; case CMD_r001_0001_xxxx_xxxx_xxxx_xxxx_xxxx_xddd_PART_ID: return "PART_ID"; case CMD_r001_0010_xxxx_xxxx_dddd_xxdd_dddd_dddd_SYSC_SEL: return "SYSC_SEL"; case CMD_r001_0011_dddd_dddd_dddd_dddd_dddd_dddd_SYS_OFF_A: return "SYS_OFF_A"; case CMD_r001_0100_dddd_dddd_dddd_dddd_dddd_dddd_SYS_OFF_B: return "SYS_OFF_B"; case CMD_r001_0101_dddd_dddd_dddd_dddd_dddd_dddd_SYS_GAIN_A: return "SYS_GAIN_A"; case CMD_r001_0110_dddd_dddd_dddd_dddd_dddd_dddd_SYS_GAIN_B: return "SYS_GAIN_B"; case CMD_r001_0111_dddd_dddd_dddd_dddd_dddd_dddd_SELF_OFF: return "SELF_OFF"; case CMD_r001_1000_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_1: return "SELF_GAIN_1"; case CMD_r001_1001_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_2: return "SELF_GAIN_2"; case CMD_r001_1010_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_4: return "SELF_GAIN_4"; case CMD_r001_1011_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_8: return "SELF_GAIN_8"; case CMD_r001_1100_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_16: return "SELF_GAIN_16"; case CMD_r001_1101_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_32: return "SELF_GAIN_32"; case CMD_r001_1110_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_64: return "SELF_GAIN_64"; case CMD_r001_1111_dddd_dddd_dddd_dddd_dddd_dddd_SELF_GAIN_128: return "SELF_GAIN_128"; case CMD_r010_0000_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH0: return "LTHRESH0"; case CMD_r010_0001_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH1: return "LTHRESH1"; case CMD_r010_0010_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH2: return "LTHRESH2"; case CMD_r010_0011_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH3: return "LTHRESH3"; case CMD_r010_0100_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH4: return "LTHRESH4"; case CMD_r010_0101_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH5: return "LTHRESH5"; case CMD_r010_0110_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH6: return "LTHRESH6"; case CMD_r010_0111_dddd_dddd_dddd_dddd_dddd_dddd_LTHRESH7: return "LTHRESH7"; case CMD_r010_1000_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH0: return "UTHRESH0"; case CMD_r010_1001_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH1: return "UTHRESH1"; case CMD_r010_1010_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH2: return "UTHRESH2"; case CMD_r010_1011_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH3: return "UTHRESH3"; case CMD_r010_1100_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH4: return "UTHRESH4"; case CMD_r010_1101_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH5: return "UTHRESH5"; case CMD_r010_1110_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH6: return "UTHRESH6"; case CMD_r010_1111_dddd_dddd_dddd_dddd_dddd_dddd_UTHRESH7: return "UTHRESH7"; case CMD_r011_0000_dddd_dddd_dddd_dddd_dddd_dddd_DATA0: return "DATA0"; case CMD_r011_0001_dddd_dddd_dddd_dddd_dddd_dddd_DATA1: return "DATA1"; case CMD_r011_0010_dddd_dddd_dddd_dddd_dddd_dddd_DATA2: return "DATA2"; case CMD_r011_0011_dddd_dddd_dddd_dddd_dddd_dddd_DATA3: return "DATA3"; case CMD_r011_0100_dddd_dddd_dddd_dddd_dddd_dddd_DATA4: return "DATA4"; case CMD_r011_0101_dddd_dddd_dddd_dddd_dddd_dddd_DATA5: return "DATA5"; case CMD_r011_0110_dddd_dddd_dddd_dddd_dddd_dddd_DATA6: return "DATA6"; case CMD_r011_0111_dddd_dddd_dddd_dddd_dddd_dddd_DATA7: return "DATA7"; case CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS: return "STATUS"; case CMD_r011_1001_dddd_dddd_dddd_dddd_dxxd_dddd_STATUS_IE: return "STATUS_IE"; case CMD_r011_1010_xaaa_aaaa_dddd_dddd_UC_0: return "UC_0"; case CMD_r011_1011_xaaa_aaaa_dddd_dddd_UC_1: return "UC_1"; case CMD_r011_1100_xaaa_aaaa_dddd_dddd_UC_2: return "UC_2"; case CMD_r011_1101_xaaa_aaaa_dddd_dddd_UC_3: return "UC_3"; case CMD_r011_1110_xaaa_aaaa_dddd_dddd_UC_4: return "UC_4"; case CMD_r011_1111_xaaa_aaaa_dddd_dddd_UC_5: return "UC_5"; case CMD_r100_0000_xaaa_aaaa_dddd_dddd_UC_6: return "UC_6"; case CMD_r100_0001_xaaa_aaaa_dddd_dddd_UC_7: return "UC_7"; case CMD_r100_0010_xaaa_aaaa_dddd_dddd_UC_8: return "UC_8"; case CMD_r100_0011_xaaa_aaaa_dddd_dddd_UC_9: return "UC_9"; case CMD_r100_0100_xaaa_aaaa_dddd_dddd_UC_10: return "UC_10"; case CMD_r100_0101_xaaa_aaaa_dddd_dddd_UC_11: return "UC_11"; case CMD_r100_0110_xaaa_aaaa_dddd_dddd_UC_12: return "UC_12"; case CMD_r100_0111_xaaa_aaaa_dddd_dddd_UC_13: return "UC_13"; case CMD_r100_1000_xaaa_aaaa_dddd_dddd_UC_14: return "UC_14"; case CMD_r100_1001_xaaa_aaaa_dddd_dddd_UC_15: return "UC_15"; case CMD_r100_1010_xaaa_aaaa_dddd_dddd_UC_16: return "UC_16"; case CMD_r100_1011_xaaa_aaaa_dddd_dddd_UC_17: return "UC_17"; case CMD_r100_1100_xaaa_aaaa_dddd_dddd_UC_18: return "UC_18"; case CMD_r100_1101_xaaa_aaaa_dddd_dddd_UC_19: return "UC_19"; case CMD_r100_1110_xaaa_aaaa_dddd_dddd_UC_20: return "UC_20"; case CMD_r100_1111_xaaa_aaaa_dddd_dddd_UC_21: return "UC_21"; case CMD_r101_0000_xaaa_aaaa_dddd_dddd_UC_22: return "UC_22"; case CMD_r101_0001_xaaa_aaaa_dddd_dddd_UC_23: return "UC_23"; case CMD_r101_0010_xaaa_aaaa_dddd_dddd_UC_24: return "UC_24"; case CMD_r101_0011_xaaa_aaaa_dddd_dddd_UC_25: return "UC_25"; case CMD_r101_0100_xaaa_aaaa_dddd_dddd_UC_26: return "UC_26"; case CMD_r101_0101_xaaa_aaaa_dddd_dddd_UC_27: return "UC_27"; case CMD_r101_0110_xaaa_aaaa_dddd_dddd_UC_28: return "UC_28"; case CMD_r101_0111_xaaa_aaaa_dddd_dddd_UC_29: return "UC_29"; case CMD_r101_1000_xaaa_aaaa_dddd_dddd_UC_30: return "UC_30"; case CMD_r101_1001_xaaa_aaaa_dddd_dddd_UC_31: return "UC_31"; case CMD_r101_1010_xaaa_aaaa_dddd_dddd_UC_32: return "UC_32"; case CMD_r101_1011_xaaa_aaaa_dddd_dddd_UC_33: return "UC_33"; case CMD_r101_1100_xaaa_aaaa_dddd_dddd_UC_34: return "UC_34"; case CMD_r101_1101_xaaa_aaaa_dddd_dddd_UC_35: return "UC_35"; case CMD_r101_1110_xaaa_aaaa_dddd_dddd_UC_36: return "UC_36"; case CMD_r101_1111_xaaa_aaaa_dddd_dddd_UC_37: return "UC_37"; case CMD_r110_0000_xaaa_aaaa_dddd_dddd_UC_38: return "UC_38"; case CMD_r110_0001_xaaa_aaaa_dddd_dddd_UC_39: return "UC_39"; case CMD_r110_0010_xaaa_aaaa_dddd_dddd_UC_40: return "UC_40"; case CMD_r110_0011_xaaa_aaaa_dddd_dddd_UC_41: return "UC_41"; case CMD_r110_0100_xaaa_aaaa_dddd_dddd_UC_42: return "UC_42"; case CMD_r110_0101_xaaa_aaaa_dddd_dddd_UC_43: return "UC_43"; case CMD_r110_0110_xaaa_aaaa_dddd_dddd_UC_44: return "UC_44"; case CMD_r110_0111_xaaa_aaaa_dddd_dddd_UC_45: return "UC_45"; case CMD_r110_1000_xaaa_aaaa_dddd_dddd_UC_46: return "UC_46"; case CMD_r110_1001_xaaa_aaaa_dddd_dddd_UC_47: return "UC_47"; case CMD_r110_1010_xaaa_aaaa_dddd_dddd_UC_48: return "UC_48"; case CMD_r110_1011_xaaa_aaaa_dddd_dddd_UC_49: return "UC_49"; case CMD_r110_1100_xaaa_aaaa_dddd_dddd_UC_50: return "UC_50"; case CMD_r110_1101_xaaa_aaaa_dddd_dddd_UC_51: return "UC_51"; case CMD_r110_1110_xaaa_aaaa_dddd_dddd_UC_52: return "UC_52"; case CMD_r110_1111_xxxx_xxxx_xaaa_aaaa_UCADDR: return "UCADDR"; } } //---------------------------------------- // Menu item 'XF' // // FILTER Select Filter and Rate. // Sets conversion rate based on RATE, LINEF, and CONV_TYPE value. See Table 9a through Table 9d for details. // For CONV_TYPE_01_Continuous, linef=LINEF_11_SINC4, rate=RATE_0100 selects output data rate 60SPS. // // @param[in] linef = filter type, default=MAX11410::LINEF_enum_t::LINEF_11_SINC4 // @param[in] rate = output data rate selection, default=MAX11410::RATE_enum_t::RATE_0100 // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_FILTER(uint8_t linef, uint8_t rate) { //---------------------------------------- // write8 0x08 FILTER RegWrite(CMD_r000_1000_x0dd_dddd_FILTER, (uint8_t)(0 | (((uint8_t)linef & 3) << 4) | (((uint8_t)rate & 15) << 0) )); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XP' // // PGA Select Gain and Signal Path. // // @param[in] sigpath = signal path, default=MAX11410::SIG_PATH_enum_t::SIG_PATH_00_BUFFERED // @param[in] gain = gain selection, default=MAX11410::GAIN_enum_t::GAIN_000_1 // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_PGA(uint8_t sigpath, uint8_t gain) { //---------------------------------------- // pga gain 1, 2, 4, 8, 16, 32, 64, or 128 based on gain index in register pga CMD_r000_1110_00ss_0ggg_PGA static uint8_t pgaGainTable[8] = {1, 2, 4, 8, 16, 32, 64, 128}; pgaGain = (sigpath == SIG_PATH_10_PGA) ? pgaGainTable[(uint8_t)gain] : 1; //---------------------------------------- // write8 0x0E PGA RegWrite(CMD_r000_1110_00ss_0ggg_PGA, (uint8_t)(0 | (((uint8_t)sigpath & 2) << 4) | (((uint8_t)gain & 7) << 0) )); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XC' // // CTRL Select clock, format, and reference. // // @param[in] extclk = external clock enable, default=0 // @param[in] u_bn = unipolar input range enable, default=0 // @param[in] format = offset binary format enable, default=0 // @param[in] refbufp_en = REFP reference buffer enable, default=0 // @param[in] refbufn_en = REFN reference buffer enable, default=0 // @param[in] ref_sel = reference selection, default=MAX11410::REF_SEL_enum_t::REF_SEL_001_REF1P_REF1N // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_CTRL(uint8_t extclk, uint8_t u_bn, uint8_t format, uint8_t refbufp_en, uint8_t refbufn_en, uint8_t ref_sel) { //---------------------------------------- // shadow of register CMD_r000_1001_dddd_dddd_CTRL ctrl = (uint8_t)(0 | (((uint8_t)extclk & 1) << 7) | (((uint8_t)u_bn & 1) << 6) | (((uint8_t)format & 1) << 5) | (((uint8_t)refbufp_en & 1) << 4) | (((uint8_t)refbufn_en & 1) << 3) | (((uint8_t)ref_sel & 7) << 0) ); //---------------------------------------- // write8 0x09 CTRL RegWrite(CMD_r000_1001_dddd_dddd_CTRL, ctrl); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XR' // // CTRL select reference, without changing the other fields. // // @pre ctrl = shadow of CTRL register // @param[in] ref_sel = reference selection, default=MAX11410::REF_SEL_enum_t::REF_SEL_001_REF1P_REF1N // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_CTRL_REF(uint8_t ref_sel) { //---------------------------------------- // shadow of register CMD_r000_1001_dddd_dddd_CTRL ctrl = (ctrl & ((~ 7) << 0)) | (((uint8_t)ref_sel & 7) << 0); //---------------------------------------- // write8 0x09 CTRL RegWrite(CMD_r000_1001_dddd_dddd_CTRL, ctrl); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XS' // // SOURCE Configure voltage bias source, current source, burnout mode // // @param[in] vbias_mode = _______, default=MAX11410::VBIAS_MODE_enum_t::VBIAS_MODE_00_Active // @param[in] brn_mode = _______, default=MAX11410::BRN_MODE_enum_t::BRN_MODE_00_disabled // @param[in] idac_mode = _______, default=MAX11410::IDAC_MODE_enum_t::IDAC_MODE_0000_10uA // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_SOURCE(uint8_t vbias_mode, uint8_t brn_mode, uint8_t idac_mode) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Configure_SOURCE..." //---------------------------------------- // write8 0x0A SOURCE RegWrite(CMD_r000_1010_dddd_dddd_SOURCE, (uint8_t)(0 | (((uint8_t)vbias_mode & 3) << 6) | (((uint8_t)brn_mode & 3) << 4) | (((uint8_t)idac_mode & 15) << 0) )); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XM' // // MUX_CTRL0 Select pins for analog input AINP and AINN // // @param[in] ainp = channel high side, default=MAX11410::AINP_SEL_enum_t::AINP_SEL_0000_AIN0 // @param[in] ainn = channel low side, default=MAX11410::AINN_SEL_enum_t::AINN_SEL_1010_GND // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_MUX_CTRL0(uint8_t ainp, uint8_t ainn) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Configure_MUX_CTRL0..." //---------------------------------------- // write8 0x0B MUX_CTRL0 RegWrite(CMD_r000_1011_dddd_dddd_MUX_CTRL0, (uint8_t)(0 | (((uint8_t)ainp & 15) << 4) | (((uint8_t)ainn & 15) << 0) )); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XI' // // MUX_CTRL1 Select pins for current source // // @param[in] idac1_sel = channel high side, default=MAX11410::IDAC1_SEL_enum_t::IDAC1_SEL_1111_unconnected // @param[in] idac0_sel = channel low side, default=MAX11410::IDAC0_SEL_enum_t::IDAC0_SEL_1111_unconnected // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_MUX_CTRL1(uint8_t idac1_sel, uint8_t idac0_sel) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Configure_MUX_CTRL1..." //---------------------------------------- // write8 0x0C MUX_CTRL1 RegWrite(CMD_r000_1100_dddd_dddd_MUX_CTRL1, (uint8_t)(0 | (((uint8_t)idac1_sel & 15) << 4) | (((uint8_t)idac0_sel & 15) << 0) )); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'XV' // // MUX_CTRL2 Select pins for voltage bias source // // @param[in] vbias_ain7_ain0_bitmap = bit map of AIN7..AIN0 enables for voltage bias, default=0 // // @return 1 on success; 0 on failure uint8_t MAX11410::Configure_MUX_CTRL2(uint8_t vbias_ain7_ain0_bitmap) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Configure_MUX_CTRL2..." //---------------------------------------- // write8 0x0D MUX_CTRL2 RegWrite(CMD_r000_1101_dddd_dddd_MUX_CTRL2, vbias_ain7_ain0_bitmap); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'X0' // // CAL_START Calibrate Self Offset and Gain. // // @return 1 on success; 0 on failure uint8_t MAX11410::Calibrate_Self_Offset_Gain(void) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Calibrate_Self_Offset_Gain..." //---------------------------------------- // write8 0x03 CAL_START RegWrite(CMD_r000_0011_xxxx_xddd_CAL_START, (uint8_t)CAL_TYPE_000_SELF_CAL); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'X1' // // CAL_START Calibrate Selected PGA. // // @return 1 on success; 0 on failure uint8_t MAX11410::Calibrate_PGA_Gain(void) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Calibrate_PGA_Gain..." //---------------------------------------- // write8 0x03 CAL_START RegWrite(CMD_r000_0011_xxxx_xddd_CAL_START, (uint8_t)CAL_TYPE_001_PGA_GAIN); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'X4' // // CAL_START Calibrate System Offset A. // // @return 1 on success; 0 on failure uint8_t MAX11410::Calibrate_System_Offset_A(void) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Calibrate_System_Offset_A..." //---------------------------------------- // write8 0x03 CAL_START RegWrite(CMD_r000_0011_xxxx_xddd_CAL_START, (uint8_t)CAL_TYPE_100_SYS_OFF_A); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'X5' // // X6 0x03 CAL_START 0x06 Calibrate System Offset B // X7 0x03 CAL_START 0x07 Calibrate System Gain B // CAL_START Calibrate System Gain A. // // @return 1 on success; 0 on failure uint8_t MAX11410::Calibrate_System_Gain_A(void) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Calibrate_System_Gain_A..." //---------------------------------------- // write8 0x03 CAL_START RegWrite(CMD_r000_0011_xxxx_xddd_CAL_START, (uint8_t)CAL_TYPE_101_SYS_GAIN_A); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'X6' // // CAL_START Calibrate System Offset B. // // @return 1 on success; 0 on failure uint8_t MAX11410::Calibrate_System_Offset_B(void) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Calibrate_System_Offset_B..." //---------------------------------------- // write8 0x03 CAL_START RegWrite(CMD_r000_0011_xxxx_xddd_CAL_START, (uint8_t)CAL_TYPE_110_SYS_OFF_B); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'X7' // // CAL_START Calibrate System Gain B. // // @return 1 on success; 0 on failure uint8_t MAX11410::Calibrate_System_Gain_B(void) { //---------------------------------------- // warning -- WIP work in progress #warning "Not Tested Yet: MAX11410::Calibrate_System_Gain_B..." //---------------------------------------- // write8 0x03 CAL_START RegWrite(CMD_r000_0011_xxxx_xddd_CAL_START, (uint8_t)CAL_TYPE_111_SYS_GAIN_B); //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item '$' -> AINcode[0], AINcode[1], AINcode[2], AINcode[3], AINcode[4], AINcode[5], AINcode[6], AINcode[7], AINcode[8], AINcode[9], AINcode[10] // // Measure all ADC channels in sequence. // Diagnostic output pulse on GP0 for each channel's measurement. // Diagnostic output pulse on GP1 for entire loop. // // @post AINcode[0..10]: measurement result LSB code // // @return 1 on success; 0 on failure uint8_t MAX11410::Read_All_Voltages(void) { //---------------------------------------- // scan AIN0..AIN9 // // diagnostic GPIO pulse on MAX11410 GP1 pin (0xc3 = logic 0, 0xc4 = logic 1) RegWrite(CMD_r000_0101_dddd_xddd_GP1_CTRL, 0xc3); // GP1 = 0 // const MAX11410_AINN_SEL_enum_t ainn = AINN_SEL_1010_GND; for(uint8_t ainp = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_0000_AIN0; ainp <= /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; ainp++) { // diagnostic GPIO pulse on MAX11410 GP0 pin (0xc3 = logic 0, 0xc4 = logic 1) RegWrite(CMD_r000_0100_dddd_xddd_GP0_CTRL, 0xc3); // GP0 = 0 // Measure_Voltage((MAX11410_AINP_SEL_enum_t)ainp, ainn); // @post AINcode[ainp]: measurement result LSB code // // diagnostic GPIO pulse on MAX11410 GP0 pin (0xc3 = logic 0, 0xc4 = logic 1) RegWrite(CMD_r000_0100_dddd_xddd_GP0_CTRL, 0xc4); // GP0 = 1 // } // diagnostic GPIO pulse on MAX11410 GP1 pin (0xc3 = logic 0, 0xc4 = logic 1) RegWrite(CMD_r000_0101_dddd_xddd_GP1_CTRL, 0xc4); // GP1 = 1 // //---------------------------------------- // success return 1; } //---------------------------------------- // Menu item 'V' // Trigger Measurement for voltage input. // // Example code for typical voltage measurement. // // @pre external connection REF2P-REF2N is a reference voltage // @pre VRef = Voltage of REF input, in Volts // @param[in] ainp = channel high side, default=AINP_SEL_0000_AIN0 // @param[in] ainn = channel low side, default=AINN_SEL_1010_GND // @post AINcode[ainp]: measurement result LSB code // // @return ideal voltage calculated from raw LSB code and reference voltage double MAX11410::Measure_Voltage(MAX11410_AINP_SEL_enum_t ainp, MAX11410_AINN_SEL_enum_t ainn) { //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)ainp > /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD) { ainp = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)ainn > /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND) { ainn = /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND; } //---------------------------------------- // write8 0x0B MUX_CTRL0 = 0x0A to select AINP=AIN0 and AINN=GND Configure_MUX_CTRL0((uint8_t)ainp, (uint8_t)ainn); //---------------------------------------- // write8 0x09 CTRL to select reference REF2P/REF2N; Data Format = Bipolar 2's Complement Configure_CTRL(/*extclk*/ 0, /*u_bn*/ 0, /*format*/ 0, /*refbufp_en*/ 0, /*refbufn_en*/ 0, /*ref_sel*/ (uint8_t)REF_SEL_010_REF2P_REF2N); //---------------------------------------- // write8 0x0E PGA Configure_PGA((uint8_t) /* MAX11410_SIG_PATH_enum_t:: */ SIG_PATH_00_BUFFERED, (uint8_t) /* MAX11410_GAIN_enum_t:: */ GAIN_000_1); //---------------------------------------- // write8 0x08 FILTER = 0x34 to select RATE_0100, LINEF_11_SINC4 60SPS (given CONV_TYPE_01_Continuous) Configure_FILTER((uint8_t) /* MAX11410::MAX11410_LINEF_enum_t:: */ LINEF_11_SINC4, (uint8_t) /* MAX11410::MAX11410_RATE_enum_t:: */ RATE_0100); //---------------------------------------- // write8 0x01 CONV_START = 0x01 to set Conversion Mode = Continuous RegWrite(CMD_r000_0001_xddd_xxdd_CONV_START, 0x01); //---------------------------------------- // purge any old data from data0 register RegRead(CMD_r011_0000_dddd_dddd_dddd_dddd_dddd_dddd_DATA0, &AINcode[((int)ainp & 0x0F)]); data0 = AINcode[((int)ainp & 0x0F)]; //---------------------------------------- // read24 0x80|0x38 STATUS (%SW 0xB8 0 0 0) RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); //---------------------------------------- // TODO1: wait until STATUS_enum_t::STATUS_000010_DATA_RDY indicates data is available // A bad SPI interface can cause bit slippage, which makes this loop get stuck. Expect *PART_ID? = 0x000F02 // while ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0) { // possible infinite loop; need a timeout or futility countdown to escape for (int futility_countdown = loop_limit; ((futility_countdown > 0) && ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0)); futility_countdown--) { RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); } //---------------------------------------- // read24 0x80|0x30 DATA0 (%SW 0xB0 0 0 0): AINcode[ainp] = measurement RegRead(CMD_r011_0000_dddd_dddd_dddd_dddd_dddd_dddd_DATA0, &AINcode[((int)ainp & 0x0F)]); data0 = AINcode[((int)ainp & 0x0F)]; //---------------------------------------- // ideal voltage calculated from raw LSB code and reference voltage return VoltageOfCode(AINcode[((int)ainp & 0x0F)]); } //---------------------------------------- // Menu item 'R' -> rtd_ohm, rtd_degc // Trigger Measurement for Resistive Temperature Device (RTD). // // Example code for typical RTD measurement. // // @pre external connection REF1P-REF1N is a reference resistor // @pre ref1_v = reference resistance in ohms, default=4999 // @pre rtd_filter = filter register configuration, 0x34 for LINEF_11_SINC4 RATE_0100 output data rate 60SPS // @pre rtd_ctrl = ctrl register configuration, 0x40 for ref0_v, 0x41 for ref1_v, 0x42 for ref2_v // @param[in] rtd_iout = channel RTD high side force, default=AINP_SEL_0111_AIN7 // @param[in] rtd_ainp = channel RTD high side sense, default=AINP_SEL_1000_AIN8 // @param[in] rtd_ainn = channel RTD low side, default=AINN_SEL_1001_AIN9 // @post AINcode[rtd_ainp]: measurement result LSB code // @post rtd_ohm: measurement result resistance in Ohms // @post rtd_degc: Temperature calculated from RTD Resistance; Thermocouple Cold Junction, in degrees C // // @return resistance calculated from raw LSB code and reference resistance double MAX11410::Measure_RTD(MAX11410_AINP_SEL_enum_t rtd_iout, MAX11410_AINP_SEL_enum_t rtd_ainp, MAX11410_AINN_SEL_enum_t rtd_ainn) { //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)rtd_iout > /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD) { rtd_iout = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)rtd_ainp > /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD) { rtd_ainp = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)rtd_ainn > /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND) { rtd_ainn = /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND; } //---------------------------------------- // write8 0x08 FILTER to select output data rate RegWrite(CMD_r000_1000_x0dd_dddd_FILTER, rtd_filter); //---------------------------------------- // write8 0x09 CTRL to select reference resistor REF1P/REF1N; Data Format = Unipolar RegWrite(CMD_r000_1001_dddd_dddd_CTRL, rtd_ctrl); ctrl = rtd_ctrl; //---------------------------------------- // write8 0x0A SOURCE to select IDAC_MODE 400uA; AIN9=2.000V, AIN8(PT100)=2.040V, AIN8(PT1000)=2.400V RegWrite(CMD_r000_1010_dddd_dddd_SOURCE, rtd_source); //---------------------------------------- // write8 0x0B MUX_CTRL0 = 0x89 to select AINP=AIN8 and AINN=AIN9 Configure_MUX_CTRL0((uint8_t)rtd_ainp, (uint8_t)rtd_ainn); //---------------------------------------- // write8 0x0C MUX_CTRL1 = 0xF7 to select IDAC1_SEL=NC, IDAC0_SEL=AIN7 Configure_MUX_CTRL1((uint8_t)IDAC1_SEL_1111_unconnected, (uint8_t)rtd_iout); //---------------------------------------- // write8 0x0E PGA and update pgaGain Configure_PGA( ((rtd_pga >> 4) & 2), // sigpath ( rtd_pga & 7)); // gain //---------------------------------------- // diagnostic GPIO pulse on GP1 during RTD power-up interval rtd_ms RegWrite(CMD_r000_0101_dddd_xddd_GP1_CTRL, 0xc3); // diagnostic GPIO pulse GP1 // write8 0x05 GP1_CTRL (%SW 0x05 0xc3) 11000 output 011 logic 0 //---------------------------------------- // timing delay after enable RTD bias current // const int rtd_ms = 100; // timing delay after enable RTD bias current wait_ms(rtd_ms); // timing delay function, platform-specific //---------------------------------------- // diagnostic GPIO pulse on GP1 during RTD power-up interval rtd_ms RegWrite(CMD_r000_0101_dddd_xddd_GP1_CTRL, 0xc4); // diagnostic GPIO pulse GP1 // write8 0x05 GP1_CTRL (%SW 0x05 0xc4) 11000 output 100 logic 1 //---------------------------------------- // write8 0x01 CONV_START = 0x01 to set Conversion Mode = Continuous RegWrite(CMD_r000_0001_xddd_xxdd_CONV_START, 0x01); //---------------------------------------- // read24 0x80|0x38 STATUS (%SW 0xB8 0 0 0) RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); //---------------------------------------- // TODO1: wait until STATUS_enum_t::STATUS_000010_DATA_RDY indicates data is available // A bad SPI interface can cause bit slippage, which makes this loop get stuck. Expect *PART_ID? = 0x000F02 // while ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0) { // possible infinite loop; need a timeout or futility countdown to escape for (int futility_countdown = loop_limit; ((futility_countdown > 0) && ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0)); futility_countdown--) { RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); } //---------------------------------------- // read24 0x80|0x30 DATA0 (%SW 0xB0 0 0 0): AINcode[ainp] = measurement RegRead(CMD_r011_0000_dddd_dddd_dddd_dddd_dddd_dddd_DATA0, &AINcode[((int)rtd_ainp & 0x0F)]); data0 = AINcode[((int)rtd_ainp & 0x0F)]; //---------------------------------------- // TODO1: turn off RTD bias current to avoid self-heating: write8 0x0C MUX_CTRL1 = 0xFF to select IDAC1_SEL=NC, IDAC0_SEL=NC Configure_MUX_CTRL1((uint8_t)IDAC1_SEL_1111_unconnected, (uint8_t)IDAC0_SEL_1111_unconnected); //---------------------------------------- // resistance calculated from raw LSB code and ref1_v reference resistance in ohms rtd_ohm = VoltageOfCode(AINcode[((int)rtd_ainp & 0x0F)]); TemperatureOfRTD(rtd_ohm); // calculate rtd_degc return rtd_ohm; } //---------------------------------------- // Return the physical temperature corresponding to measured resistance // of a PT1000 type Resistive Temperature Device (RTD). // // @param[in] rtd_ohm = RTD resistance in ohms, default=1000 // @post rtd_degc: Temperature calculated from RTD Resistance; Thermocouple Cold Junction, in degrees C // // @return ideal temperature in degrees C, calculated from RTD resistance in ohms // @test group RTD_PT1000 // PT1000 type Resistive Temperature Device (RTD) // @test group RTD_PT1000 tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group RTD_PT1000 TemperatureOfRTD_PT1000(842.94) expect -40.0 within 0.1 // PT-1000 RTD at -40C // @test group RTD_PT1000 TemperatureOfRTD_PT1000(1000.0) expect 0.0 within 0.1 // PT-1000 RTD at 0C // @test group RTD_PT1000 TemperatureOfRTD_PT1000(1097.3) expect 25.0 within 0.1 // PT-1000 RTD at 25C // @test group RTD_PT1000 TemperatureOfRTD_PT1000(1328.1) expect 85.0 within 0.1 // PT-1000 RTD at 85C // @test group RTD_PT1000 TemperatureOfRTD_PT1000(1479.5) expect 125.0 within 0.1 // PT-1000 RTD at 125C // @test group RTD_PT1000 tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::TemperatureOfRTD_PT1000(double rtd_ohm) { //---------------------------------------- // Temperature from RTD Resistance maths // ITS-90 PT-1000 RTD double R0 = 1000.0; double a = 3.9083e-3; double b = -5.7750e-7; // calculate T from R and R0 double sqrtTerm = sqrt(R0*R0 * a*a - 4*R0*b*(R0 - rtd_ohm)); double denominator = 2 * R0 * b; rtd_degc = ((-R0 * a) + (sqrtTerm)) / denominator; return rtd_degc; } //---------------------------------------- // Return the physical temperature corresponding to measured resistance // of a PT100 type Resistive Temperature Device (RTD). // // @param[in] rtd_ohm = RTD resistance in ohms, default=100 // @post rtd_degc: Temperature calculated from RTD Resistance; Thermocouple Cold Junction, in degrees C // // @return ideal temperature in degrees C, calculated from RTD resistance in ohms // @test group RTD_PT100 // PT100 type Resistive Temperature Device (RTD) // @test group RTD_PT100 tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group RTD_PT100 TemperatureOfRTD_PT100(84.294) expect -40.0 within 0.1 // PT-100 RTD at -40C // @test group RTD_PT100 TemperatureOfRTD_PT100(100.00) expect 0.0 within 0.1 // PT-100 RTD at 0C // @test group RTD_PT100 TemperatureOfRTD_PT100(109.73) expect 25.0 within 0.1 // PT-100 RTD at 25C // @test group RTD_PT100 TemperatureOfRTD_PT100(132.81) expect 85.0 within 0.1 // PT-100 RTD at 85C // @test group RTD_PT100 TemperatureOfRTD_PT100(147.95) expect 125.0 within 0.1 // PT-100 RTD at 125C // @test group RTD_PT100 tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::TemperatureOfRTD_PT100(double rtd_ohm) { //---------------------------------------- // Temperature from RTD Resistance maths // ITS-90 PT-100 RTD double R0 = 100.0; double a = 3.9083e-3; double b = -5.7750e-7; // calculate T from R and R0 double sqrtTerm = sqrt(R0*R0 * a*a - 4*R0*b*(R0 - rtd_ohm)); double denominator = 2 * R0 * b; rtd_degc = ((-R0 * a) + (sqrtTerm)) / denominator; return rtd_degc; } //---------------------------------------- // Return the physical temperature corresponding to measured resistance // of a PT100 or PT1000 type Resistive Temperature Device (RTD). // // @param[in] rtd_ohm = RTD resistance in ohms, default=100 // @post rtd_degc: Temperature calculated from RTD Resistance; Thermocouple Cold Junction, in degrees C // // @return ideal temperature in degrees C, calculated from RTD resistance in ohms // @test group RTD // Verify function TemperatureOfRTD // @test group RTD tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group RTD TemperatureOfRTD(84.294) expect -40.0 within 0.1 // PT-100 RTD at -40C // @test group RTD TemperatureOfRTD(100.00) expect 0.0 within 0.1 // PT-100 RTD at 0C // @test group RTD TemperatureOfRTD(109.73) expect 25.0 within 0.1 // PT-100 RTD at 25C // @test group RTD TemperatureOfRTD(132.81) expect 85.0 within 0.1 // PT-100 RTD at 85C // @test group RTD TemperatureOfRTD(147.95) expect 125.0 within 0.1 // PT-100 RTD at 125C // @test group RTD TemperatureOfRTD(842.94) expect -40.0 within 0.1 // PT-1000 RTD at -40C // @test group RTD TemperatureOfRTD(1000.0) expect 0.0 within 0.1 // PT-1000 RTD at 0C // @test group RTD TemperatureOfRTD(1097.3) expect 25.0 within 0.1 // PT-1000 RTD at 25C // @test group RTD TemperatureOfRTD(1328.1) expect 85.0 within 0.1 // PT-1000 RTD at 85C // @test group RTD TemperatureOfRTD(1479.5) expect 125.0 within 0.1 // PT-1000 RTD at 125C // @test group RTD tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::TemperatureOfRTD(double rtd_ohm) { //---------------------------------------- // return TemperatureOfRTD_PT100 or TemperatureOfRTD_PT1000 if (rtd_ohm > 500.0) { return TemperatureOfRTD_PT1000(rtd_ohm); } else { return TemperatureOfRTD_PT100(rtd_ohm); } } //---------------------------------------- // Menu item 'TM' -> tc_v, tc_delta_degc, tc_degc // Trigger Measurement for Thermocouple // // Example code for typical Thermocouple measurement. // An RTD measures the "cold junction" where TC connects to the board, // and the TC measures the temperature difference above the cold junction. // // @param[in] tc_ainp = channel of Thermocouple high side, default=AINP_SEL_0101_AIN5 // @param[in] tc_ainn = channel of Thermocouple low side, default=AINN_SEL_0110_AIN6 // @param[in] rtd_iout = channel RTD high side force, default=AINP_SEL_0111_AIN7 // @param[in] rtd_ainp = channel RTD high side sense, default=AINP_SEL_1000_AIN8 // @param[in] rtd_ainn = channel RTD low side, default=AINN_SEL_1001_AIN9 // @post AINcode[tc_ainp]: measurement result LSB code // @post tc_v: raw thermocouple voltage in Volts // @post tc_delta_degc: temperature in degC above cold junction // @post tc_degc: temperature in degC // // @return 1 on success; 0 on failure double MAX11410::Measure_Thermocouple(MAX11410_AINP_SEL_enum_t tc_ainp, MAX11410_AINN_SEL_enum_t tc_ainn, MAX11410_AINP_SEL_enum_t rtd_iout, MAX11410_AINP_SEL_enum_t rtd_ainp, MAX11410_AINN_SEL_enum_t rtd_ainn) { //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)tc_ainp > /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD) { tc_ainp = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)tc_ainn > /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND) { tc_ainn = /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)rtd_iout > /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD) { rtd_iout = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)rtd_ainp > /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD) { rtd_ainp = /* MAX11410_AINP_SEL_enum_t:: */ AINP_SEL_1010_AVDD; } //---------------------------------------- // restrict channel selection to valid index range if ((uint8_t)rtd_ainn > /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND) { rtd_ainn = /* MAX11410_AINN_SEL_enum_t:: */ AINN_SEL_1010_GND; } //---------------------------------------- // write8 0x0B MUX_CTRL0 = 0x0A to select AINP=AIN0 and AINN=GND Configure_MUX_CTRL0((uint8_t)tc_ainp, (uint8_t)tc_ainn); //---------------------------------------- // write8 0x09 CTRL to select reference REF2P/REF2N; Data Format = Bipolar 2's Complement Configure_CTRL(/*extclk*/ 0, /*u_bn*/ 0, /*format*/ 0, /*refbufp_en*/ 0, /*refbufn_en*/ 0, /*ref_sel*/ (uint8_t)REF_SEL_010_REF2P_REF2N); //---------------------------------------- // write8 0x0E PGA Configure_PGA((uint8_t) /* MAX11410_SIG_PATH_enum_t:: */ SIG_PATH_00_BUFFERED, (uint8_t) /* MAX11410_GAIN_enum_t:: */ GAIN_000_1); //---------------------------------------- // write8 0x08 FILTER = 0x34 to select RATE_0100, LINEF_11_SINC4 60SPS (given CONV_TYPE_01_Continuous) Configure_FILTER((uint8_t) /* MAX11410::MAX11410_LINEF_enum_t:: */ LINEF_11_SINC4, (uint8_t) /* MAX11410::MAX11410_RATE_enum_t:: */ RATE_0100); //---------------------------------------- // write8 0x01 CONV_START = 0x01 to set Conversion Mode = Continuous RegWrite(CMD_r000_0001_xddd_xxdd_CONV_START, 0x01); //---------------------------------------- // read24 0x80|0x38 STATUS (%SW 0xB8 0 0 0) RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); //---------------------------------------- // TODO1: wait until STATUS_enum_t::STATUS_000010_DATA_RDY indicates data is available // A bad SPI interface can cause bit slippage, which makes this loop get stuck. Expect *PART_ID? = 0x000F02 // while ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0) { // possible infinite loop; need a timeout or futility countdown to escape for (int futility_countdown = loop_limit; ((futility_countdown > 0) && ((status & /* MAX11410_STATUS_enum_t:: */ STATUS_000010_DATA_RDY) == 0)); futility_countdown--) { RegRead(CMD_r011_1000_dddd_dddd_dddd_dddd_dxxx_dddd_STATUS, &status); } //---------------------------------------- // read24 0x80|0x30 DATA0 (%SW 0xB0 0 0 0): AINcode[tc_ainp] = measurement RegRead(CMD_r011_0000_dddd_dddd_dddd_dddd_dddd_dddd_DATA0, &AINcode[((int)tc_ainp & 0x0F)]); data0 = AINcode[((int)tc_ainp & 0x0F)]; //---------------------------------------- // ideal voltage calculated from raw LSB code and reference voltage tc_v = VoltageOfCode(AINcode[((int)tc_ainp & 0x0F)]); //---------------------------------------- // ideal voltage calculated from raw LSB code and reference voltage tc_delta_degc = TemperatureOfTC_TypeK(tc_v); //---------------------------------------- // ideal voltage calculated from raw LSB code and reference voltage tc_degc = rtd_degc + tc_delta_degc; //---------------------------------------- // ideal voltage calculated from raw LSB code and reference voltage return tc_v; } //---------------------------------------- // Return the physical temperature corresponding to measured voltage // of a type K Thermocouple (TC). // // @pre {0}.rtd_degc = cold junction temperature, in degrees C // @param[in] tc_v = Thermocouple voltage in volts, default=0.0254 // // @return ideal temperature in degrees C, calculated from RTD resistance in ohms // @test group TC_1 // Verify Thermocouple function TemperatureOfTC_TypeK // @test group TC_2 // Verify Thermocouple function TemperatureOfTC_TypeK in more detail // @test group TC_1 tinyTester.blink_time_msec = 20 // quickly speed through the software verification // @test group TC_1 TemperatureOfTC_TypeK(0.000e-3) expect 0.0 within 0.1 // TC_TypeK at 0C = 0.000mV // @test group TC_1 TemperatureOfTC_TypeK(0.039e-3) expect 1.0 within 0.1 // TC_TypeK at 1C = 0.039mV // @test group TC_1 TemperatureOfTC_TypeK(0.079e-3) expect 2.0 within 0.1 // TC_TypeK at 2C = 0.079mV // @test group TC_1 TemperatureOfTC_TypeK(0.119e-3) expect 3.0 within 0.1 // TC_TypeK at 3C = 0.119mV // @test group TC_2 TemperatureOfTC_TypeK(0.158e-3) expect 4.0 within 0.1 // TC_TypeK at 4C = 0.158mV // @test group TC_2 TemperatureOfTC_TypeK(0.198e-3) expect 5.0 within 0.1 // TC_TypeK at 5C = 0.198mV // @test group TC_2 TemperatureOfTC_TypeK(0.238e-3) expect 6.0 within 0.1 // TC_TypeK at 6C = 0.238mV // @test group TC_2 TemperatureOfTC_TypeK(0.2775e-3) expect 7.0 within 0.1 // TC_TypeK at 7C = 0.2775mV // @test group TC_2 TemperatureOfTC_TypeK(0.317e-3) expect 8.0 within 0.1 // TC_TypeK at 8C = 0.317mV // @test group TC_2 TemperatureOfTC_TypeK(0.357e-3) expect 9.0 within 0.1 // TC_TypeK at 9C = 0.357mV // @test group TC_1 TemperatureOfTC_TypeK(0.397e-3) expect 10.0 within 0.1 // TC_TypeK at 10C = 0.397mV // @test group TC_1 TemperatureOfTC_TypeK(0.798e-3) expect 20.0 within 0.1 // TC_TypeK at 20C = 0.798mV // @test group TC_1 TemperatureOfTC_TypeK(1.081e-3) expect 27.0 within 0.1 // TC_TypeK at 27C = 1.081mV // @test group TC_1 TemperatureOfTC_TypeK(1.203e-3) expect 30.0 within 0.1 // TC_TypeK at 30C = 1.203mV // @test group TC_1 TemperatureOfTC_TypeK(1.612e-3) expect 40.0 within 0.1 // TC_TypeK at 40C = 1.612mV // @test group TC_1 TemperatureOfTC_TypeK(2.023e-3) expect 50.0 within 0.1 // TC_TypeK at 50C = 2.023mV // @test group TC_1 TemperatureOfTC_TypeK(2.436e-3) expect 60.0 within 0.1 // TC_TypeK at 60C = 2.436mV // @test group TC_1 TemperatureOfTC_TypeK(2.851e-3) expect 70.0 within 0.1 // TC_TypeK at 70C = 2.851mV // @test group TC_1 TemperatureOfTC_TypeK(3.267e-3) expect 80.0 within 0.1 // TC_TypeK at 80C = 3.267mV // @test group TC_1 TemperatureOfTC_TypeK(3.682e-3) expect 90.0 within 0.1 // TC_TypeK at 90C = 3.682mV // @test group TC_1 TemperatureOfTC_TypeK(4.096e-3) expect 100.0 within 0.1 // TC_TypeK at 100C = 4.096mV // @test group TC_2 TemperatureOfTC_TypeK(4.509e-3) expect 110.0 within 0.1 // TC_TypeK at 110C = 4.509mV // @test group TC_2 TemperatureOfTC_TypeK(4.920e-3) expect 120.0 within 0.1 // TC_TypeK at 120C = 4.920mV // @test group TC_2 TemperatureOfTC_TypeK(5.328e-3) expect 130.0 within 0.1 // TC_TypeK at 130C = 5.328mV // @test group TC_2 TemperatureOfTC_TypeK(5.735e-3) expect 140.0 within 0.1 // TC_TypeK at 140C = 5.735mV // @test group TC_2 TemperatureOfTC_TypeK(6.138e-3) expect 150.0 within 0.1 // TC_TypeK at 150C = 6.138mV // @test group TC_2 TemperatureOfTC_TypeK(6.540e-3) expect 160.0 within 0.1 // TC_TypeK at 160C = 6.540mV // @test group TC_2 TemperatureOfTC_TypeK(6.941e-3) expect 170.0 within 0.1 // TC_TypeK at 170C = 6.941mV // @test group TC_2 TemperatureOfTC_TypeK(7.340e-3) expect 180.0 within 0.1 // TC_TypeK at 180C = 7.340mV // @test group TC_1 TemperatureOfTC_TypeK(7.739e-3) expect 190.0 within 0.1 // TC_TypeK at 190C = 7.739mV // @test group TC_1 TemperatureOfTC_TypeK(8.138e-3) expect 200.0 within 0.1 // TC_TypeK at 200C = 8.138mV // @test group TC_1 TemperatureOfTC_TypeK(8.539e-3) expect 210.0 within 0.1 // TC_TypeK at 210C = 8.539mV // @test group TC_1 TemperatureOfTC_TypeK(8.940e-3) expect 220.0 within 0.1 // TC_TypeK at 220C = 8.940mV // @test group TC_2 TemperatureOfTC_TypeK(9.343e-3) expect 230.0 within 0.1 // TC_TypeK at 230C = 9.343mV // @test group TC_2 TemperatureOfTC_TypeK(9.747e-3) expect 240.0 within 0.1 // TC_TypeK at 240C = 9.747mV // @test group TC_2 TemperatureOfTC_TypeK(10.153e-3) expect 250.0 within 0.1 // TC_TypeK at 250C = 10.153mV // @test group TC_2 TemperatureOfTC_TypeK(10.561e-3) expect 260.0 within 0.1 // TC_TypeK at 260C = 10.561mV // @test group TC_2 TemperatureOfTC_TypeK(10.971e-3) expect 270.0 within 0.1 // TC_TypeK at 270C = 10.971mV // @test group TC_2 TemperatureOfTC_TypeK(11.382e-3) expect 280.0 within 0.1 // TC_TypeK at 280C = 11.382mV // @test group TC_2 TemperatureOfTC_TypeK(11.795e-3) expect 290.0 within 0.1 // TC_TypeK at 290C = 11.795mV // @test group TC_1 TemperatureOfTC_TypeK(12.209e-3) expect 300.0 within 0.1 // TC_TypeK at 300C = 12.209mV // @test group TC_2 TemperatureOfTC_TypeK(14.293e-3) expect 350.0 within 0.1 // TC_TypeK at 350C = 14.293mV // @test group TC_1 TemperatureOfTC_TypeK(16.397e-3) expect 400.0 within 0.1 // TC_TypeK at 400C = 16.397mV // @test group TC_1 TemperatureOfTC_TypeK(18.516e-3) expect 450.0 within 0.1 // TC_TypeK at 450C = 18.516mV // @test group TC_1 TemperatureOfTC_TypeK(20.218e-3) expect 490.0 // TC_TypeK at 490C = 20.218mV // @test group TC_1 tinyTester.blink_time_msec = 75 // default 75 resume hardware self test // double MAX11410::TemperatureOfTC_TypeK(double tc_v) { //---------------------------------------- // Temperature from TC_TypeK voltage maths // define standard TC_TypeK coefficients // ITS-90 Thermocouple Inverse Polynomial for a Type K thermocouple // calculate deltaT from tc_v // // Voltage range -5891uV < tc_v < 0uV, // Temperature Range -200 deg C to 0 deg C static double coefficients_TCtypeK_V_lt_0[] = { 0.00000, 2.5173462e-2, -1.1662878e-6, -1.0833638e-9, -8.9773540e-13, -3.7342377e-16, -8.6632643e-20, -1.0450598e-23, -5.1920577e-28, }; // // Voltage range 0uV < tc_v < 20.644uV, // Temperature Range 0 deg C to 500 deg C static double coefficients_TCtypeK_0_lt_V_lt_20u644V[] = { 0.00000, 2.508355e-2, 7.860106e-8, -2.503131e-10, 8.315270e-14, -1.228034e-17, 9.804036e-22, -4.413030e-26, 1.057734e-30, -1.052755e-35, }; // // Voltage range 20.6440uV < tc_v < 54.886uV, // Temperature Range 500 deg C to 1372 deg C static double coefficients_TCtypeK_20u644V_lt_V_lt_54u886V[] = { -1.318058e2, 4.830222e-2, -1.646031e-6, 5.464731e-11, -9.650715e-16, 8.802193e-21, -3.110810e-26, }; // double deltaT = 0; double thermocouple_voltage_uV = tc_v * 1e6; if (thermocouple_voltage_uV < 0) { // Voltage range -5891uV < DMMavg < 0uV, Temperature Range -200 deg C to 0 deg C deltaT = temperatureDegC_polynomial(thermocouple_voltage_uV, 9, coefficients_TCtypeK_V_lt_0); } else if (thermocouple_voltage_uV > 20644) { // Voltage range 206440uV < DMMavg < 54886uV, Temperature Range 500 deg C to 1372 deg C deltaT = temperatureDegC_polynomial(thermocouple_voltage_uV, 7, coefficients_TCtypeK_20u644V_lt_V_lt_54u886V); } else { // Voltage range 0uV < DMMavg < 20.644uV, Temperature Range 0 deg C to 500 deg C deltaT = temperatureDegC_polynomial(thermocouple_voltage_uV, 10, coefficients_TCtypeK_0_lt_V_lt_20u644V); } return deltaT; // + rtd_degc; // cold junction } //---------------------------------------- // Calculate temperature in degrees C from input voltage, // using a given set of polynomial coefficients. // For example: // // t = coefficients[0] + coefficients[1] * DMMavg + coefficients[2] * DmMMavg**2 // // @param[in] thermocouple_voltage_uV = Thermocouple voltage in microvolts // // @return ideal temperature in degrees C, calculated from polynomial coefficients // double MAX11410::temperatureDegC_polynomial(double thermocouple_voltage_uV, int num_coefficients, double coefficients[]) { //---------------------------------------- // Temperature from polynomial coefficients maths double temperatureDegC = 0; int index; for (index = num_coefficients-1; index >= 0; index--) { temperatureDegC = (temperatureDegC * thermocouple_voltage_uV) + coefficients[index]; } return temperatureDegC; } // End of file