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changed SusHandler MAX1227 to internal clock mode

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This commit is contained in:
Jakob Meier 2021-05-10 11:13:39 +02:00
parent a6465c42ba
commit e1e69539ca
4 changed files with 52 additions and 90 deletions
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84
mission/devices/SusHandler.cpp
View File

@ -34,18 +34,14 @@ ReturnValue_t SusHandler::buildNormalDeviceCommand(
DeviceCommandId_t * id) {
if (communicationStep == CommunicationStep::WRITE_SETUP) {
*id = SUS::WRITE_SETUP;
communicationStep = CommunicationStep::REQUEST_TEMPERATURE;
communicationStep = CommunicationStep::START_CONVERSIONS;
}
else if (communicationStep == CommunicationStep::REQUEST_TEMPERATURE) {
*id = SUS::REQUEST_TEMPERATURE;
communicationStep = CommunicationStep::READ_TEMPERATURE;
else if (communicationStep == CommunicationStep::START_CONVERSIONS) {
*id = SUS::START_CONVERSIONS;
communicationStep = CommunicationStep::READ_CONVERSIONS;
}
else if (communicationStep == CommunicationStep::READ_TEMPERATURE) {
*id = SUS::READ_TEMPERATURE;
communicationStep = CommunicationStep::READ_CHANNELS;
}
else if (communicationStep == CommunicationStep::READ_CHANNELS) {
*id = SUS::READ_CHANNELS;
else if (communicationStep == CommunicationStep::READ_CONVERSIONS) {
*id = SUS::READ_CONVERSIONS;
communicationStep = CommunicationStep::WRITE_SETUP;
}
return buildCommandFromCommand(*id, nullptr, 0);
@ -69,41 +65,22 @@ ReturnValue_t SusHandler::buildCommandFromCommand(
*/
//TODO: Protect spi bus with mutex
gpioComIF->pullLow(chipSelectId);
cmdBuffer[0] = SUS::SETUP_DEFINITION;
cmdBuffer[0] = SUS::SETUP;
rawPacket = cmdBuffer;
rawPacketLen = 1;
return RETURN_OK;
}
case(SUS::READ_CHANNELS): {
case(SUS::START_CONVERSIONS): {
std::memset(cmdBuffer, 0, sizeof(cmdBuffer));
cmdBuffer[0] = SUS::CONVERT_DIFF_CHANNEL_0;
cmdBuffer[1] = SUS::DUMMY_BYTE;
cmdBuffer[2] = SUS::CONVERT_DIFF_CHANNEL_1;
cmdBuffer[3] = SUS::DUMMY_BYTE;
cmdBuffer[4] = SUS::CONVERT_DIFF_CHANNEL_2;
cmdBuffer[5] = SUS::DUMMY_BYTE;
cmdBuffer[6] = SUS::CONVERT_DIFF_CHANNEL_3;
cmdBuffer[7] = SUS::DUMMY_BYTE;
cmdBuffer[8] = SUS::CONVERT_DIFF_CHANNEL_4;
cmdBuffer[9] = SUS::DUMMY_BYTE;
cmdBuffer[10] = SUS::CONVERT_DIFF_CHANNEL_5;
cmdBuffer[11] = SUS::DUMMY_BYTE;
cmdBuffer[12] = SUS::DUMMY_BYTE;
cmdBuffer[0] = SUS::CONVERSION;
rawPacket = cmdBuffer;
rawPacketLen = SUS::SIZE_READ_CHANNELS;
rawPacketLen = 1;
return RETURN_OK;
}
case(SUS::REQUEST_TEMPERATURE): {
std::memset(cmdBuffer, 0, sizeof(cmdBuffer));
cmdBuffer[0] = SUS::CONVERT_TEMPERATURE;
rawPacket = cmdBuffer;
rawPacketLen = 1;
return RETURN_OK;
}
case(SUS::READ_TEMPERATURE): {
case(SUS::READ_CONVERSIONS): {
std::memset(cmdBuffer, 0, sizeof(cmdBuffer));
rawPacket = cmdBuffer;
rawPacketLen = 24;
rawPacketLen = SUS::SIZE_READ_CONVERSIONS;
return RETURN_OK;
}
default:
@ -114,10 +91,8 @@ ReturnValue_t SusHandler::buildCommandFromCommand(
void SusHandler::fillCommandAndReplyMap() {
this->insertInCommandMap(SUS::WRITE_SETUP);
this->insertInCommandMap(SUS::REQUEST_TEMPERATURE);
this->insertInCommandAndReplyMap(SUS::READ_CHANNELS, 1, &dataset, SUS::SIZE_READ_CHANNELS);
this->insertInCommandAndReplyMap(SUS::READ_TEMPERATURE, 1, nullptr,
SUS::SIZE_READ_TEMPERATURE);
this->insertInCommandMap(SUS::START_CONVERSIONS);
this->insertInCommandAndReplyMap(SUS::READ_CONVERSIONS, 1, &dataset, SUS::SIZE_READ_CONVERSIONS);
}
ReturnValue_t SusHandler::scanForReply(const uint8_t *start,
@ -130,15 +105,18 @@ ReturnValue_t SusHandler::scanForReply(const uint8_t *start,
ReturnValue_t SusHandler::interpretDeviceReply(DeviceCommandId_t id,
const uint8_t *packet) {
switch (id) {
case SUS::READ_CHANNELS: {
case SUS::READ_CONVERSIONS: {
PoolReadGuard readSet(&dataset);
dataset.ain0 = (*(packet + 1) << 8 | *(packet + 2));
dataset.ain1 = (*(packet + 3) << 8 | *(packet + 4));
dataset.ain2 = (*(packet + 5) << 8 | *(packet + 6));
dataset.ain3 = (*(packet + 7) << 8 | *(packet + 8));
dataset.ain4 = (*(packet + 9) << 8 | *(packet + 10));
dataset.ain5 = (*(packet + 11) << 8 | *(packet + 12));
dataset.temperatureCelcius = (*(packet) << 8 | *(packet + 1)) * 0.125;
dataset.ain0 = (*(packet + 2) << 8 | *(packet + 3));
dataset.ain1 = (*(packet + 4) << 8 | *(packet + 5));
dataset.ain2 = (*(packet + 6) << 8 | *(packet + 7));
dataset.ain3 = (*(packet + 8) << 8 | *(packet + 9));
dataset.ain4 = (*(packet + 10) << 8 | *(packet + 11));
dataset.ain5 = (*(packet + 12) << 8 | *(packet + 13));
#if OBSW_VERBOSE_LEVEL >= 1 && DEBUG_SUS
sif::info << "SUS object id 0x" << std::hex << this->getObjectId() << ", Temperature: "
<< dataset.temperatureCelcius << " °C" << std::endl;
sif::info << "SUS object id 0x" << std::hex << this->getObjectId() << ", AIN0: "
<< std::dec << dataset.ain0 << std::endl;
sif::info << "SUS object id 0x" << std::hex << this->getObjectId() << ", AIN1: "
@ -152,22 +130,10 @@ ReturnValue_t SusHandler::interpretDeviceReply(DeviceCommandId_t id,
sif::info << "SUS object id 0x" << std::hex << this->getObjectId() << ", AIN5: "
<< std::dec << dataset.ain5 << std::endl;
#endif
/**
* Reading the channel conversion results is the last communication step in one SUS
* sequence. SPI bus can now be released again.
*/
/** SUS can now be shutdown and thus the SPI bus released again */
gpioComIF->pullHigh(chipSelectId);
break;
}
case SUS::READ_TEMPERATURE: {
PoolReadGuard readSet(&dataset);
dataset.temperatureCelcius = (*(packet + 22) << 8 | *(packet + 23)) * 0.125;
#if OBSW_VERBOSE_LEVEL >= 1 && DEBUG_SUS
sif::info << "SUS object id 0x" << std::hex << this->getObjectId() << ", temperature: "
<< dataset.temperatureCelcius << " °C" << std::endl;
#endif
break;
}
default: {
sif::debug << "SusHandler::interpretDeviceReply: Unknown reply id" << std::endl;
return DeviceHandlerIF::UNKNOWN_DEVICE_REPLY;

5
mission/devices/SusHandler.h
View File

@ -42,9 +42,8 @@ private:
enum class CommunicationStep {
WRITE_SETUP,
REQUEST_TEMPERATURE,
READ_TEMPERATURE,
READ_CHANNELS
START_CONVERSIONS,
READ_CONVERSIONS
};
LinuxLibgpioIF* gpioComIF = nullptr;

2
mission/devices/devicedefinitions/RadSensorDefinitions.h
View File

@ -18,7 +18,7 @@ namespace RAD_SENSOR {
* power on.
*
* @note Bit1 (DIFFSEL1) - Bit0 (DIFFSEL0): 0b00, no data follows the setup byte
* Bit3 (REFSEL1) - Bit2 (REFSEL0): 0b01, external reference single ended
* Bit3 (REFSEL1) - Bit2 (REFSEL0): 0b10, internal reference, no wake-up delay
* Bit5 (CLKSEL1) - Bit4 (CLKSEL0): 0b10, MAX1227 uses internal oscillator for timing
* Bit7 - Bit6: 0b01, tells MAX1227 that this is the setup register
*

51
mission/devices/devicedefinitions/SusDefinitions.h
View File

@ -11,55 +11,52 @@ namespace SUS {
static const DeviceCommandId_t NONE = 0x0; // Set when no command is pending
/**
* This command initiates the ADC conversion for all channels including the internal
* temperature sensor.
*/
static const DeviceCommandId_t WRITE_SETUP = 0x1;
static const DeviceCommandId_t READ_CHANNELS = 0x2;
static const DeviceCommandId_t READ_TEMPERATURE = 0x3;
static const DeviceCommandId_t REQUEST_TEMPERATURE = 0x4;
/**
* This command initiates the ADC conversion for all channels including the internal
* temperature sensor.
*/
static const DeviceCommandId_t START_CONVERSIONS = 0x2;
/**
* This command reads the internal fifo which holds the temperature and the channel
* conversions.
*/
static const DeviceCommandId_t READ_CONVERSIONS = 0x3;
/**
* @brief This is the configuration byte which will be written to the setup register after
* power on.
*
* @note Bit1 (DIFFSEL1) - Bit0 (DIFFSEL0): 0b00, No byte is following the setup byte
* Bit3 (REFSEL1) - Bit2 (REFSEL0): 0b10, internal reference, no wake-up delay
* Bit5 (CLKSEL1) - Bit4 (CLKSEL0): 0b11, MAX1227 clocked through SPI SCLK
* Bit7 - Bit6: 0b01, tells MAX1227 that this is the setup register
* Bit3 (REFSEL1) - Bit2 (REFSEL0): 0b10, Internal reference, no wake-up delay
* Bit5 (CLKSEL1) - Bit4 (CLKSEL0): 0b10, Internally clocked
* Bit7 - Bit6: 0b01, Tells MAX1227 that this byte should be
* written to the setup register
*
*/
static const uint8_t SETUP_DEFINITION = 0b01111000;
static const uint8_t SETUP = 0b01101000;
/**
* @brief This value will always be written to the ADC conversion register to specify the
* @brief This values will always be written to the ADC conversion register to specify the
* conversions to perform.
* @details Bit0: 1 - Enables temperature conversion
* Bit2 (SCAN1) and Bit1 (SCAN0): 0b11, No scan, converts channel N once only.
* Scanning is not supported in spi clock mode.
* Bit6 - Bit3 defines N: 0b0001 (N = 4)
* Bit2 (SCAN1) and Bit1 (SCAN0): 0b00, Scans channels 0 through N
* Bit6 - Bit3 defines N: 0b0101 (N = 5)
* Bit7: Always 1. Tells the ADC that this is the conversion register.
*/
static const uint8_t CONVERT_TEMPERATURE = 0b10000001;
static const uint8_t CONVERT_DIFF_CHANNEL_0 = 0b10000110;
static const uint8_t CONVERT_DIFF_CHANNEL_1 = 0b10001110;
static const uint8_t CONVERT_DIFF_CHANNEL_2 = 0b10010110;
static const uint8_t CONVERT_DIFF_CHANNEL_3 = 0b10011110;
static const uint8_t CONVERT_DIFF_CHANNEL_4 = 0b10100110;
static const uint8_t CONVERT_DIFF_CHANNEL_5 = 0b10101110;
static const uint8_t CONVERSION = 0b10101001;
/** Writing this value resets the fifo */
static const uint8_t RESET_FIFO = 0b00011000;
static const uint8_t DUMMY_BYTE = 0x0;
static const uint8_t SUS_DATA_SET_ID = READ_CHANNELS;
static const uint8_t SUS_DATA_SET_ID = READ_CONVERSIONS;
/** Size of data replies */
static const uint8_t SIZE_READ_CHANNELS = 13;
static const uint8_t SIZE_READ_TEMPERATURE = 25;
/** Size of data replies. Temperature and 6 channel convesions (AIN0 - AIN5) */
static const uint8_t SIZE_READ_CONVERSIONS = 14;
static const uint8_t MAX_CMD_SIZE = SIZE_READ_TEMPERATURE;
static const uint8_t MAX_CMD_SIZE = SIZE_READ_CONVERSIONS;
static const uint8_t POOL_ENTRIES = 7;