eive-obsw/linux/boardtest/I2cTestClass.cpp
Robin Mueller 9456dc1a00
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2022-02-03 16:04:24 +01:00

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C++

#include "I2cTestClass.h"
#include <errno.h>
#include <fsfw_hal/linux/UnixFileGuard.h>
#include <linux/i2c-dev.h>
#include <sys/ioctl.h>
#include "fsfw/globalfunctions/arrayprinter.h"
#include "fsfw/serviceinterface.h"
I2cTestClass::I2cTestClass(object_id_t objectId, std::string i2cdev)
: TestTask(objectId), i2cdev(i2cdev) {
mode = TestModes::BPX_BATTERY;
}
ReturnValue_t I2cTestClass::initialize() {
if (mode == TestModes::BPX_BATTERY) {
battInit();
}
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t I2cTestClass::performPeriodicAction() {
if (mode == TestModes::BPX_BATTERY) {
battPeriodic();
}
return HasReturnvaluesIF::RETURN_OK;
}
void I2cTestClass::battInit() {
sif::info << "I2cTestClass: BPX Initialization" << std::endl;
UnixFileGuard fileHelper(i2cdev, &bpxInfo.fd, O_RDWR, "I2cTestClass::sendMessage");
if (fileHelper.getOpenResult() != HasReturnvaluesIF::RETURN_OK) {
sif::error << "Opening I2C device" << i2cdev << " failed" << std::endl;
return;
}
if (ioctl(bpxInfo.fd, I2C_SLAVE, bpxInfo.addr) < 0) {
sif::error << "Failed to acquire bus access and/or talk to slave" << std::endl;
}
cmdBuf[0] = BpxBattery::PORT_PING;
cmdBuf[1] = 0x42;
sendLen = 2;
ReturnValue_t result = i2cWrite(bpxInfo.fd, cmdBuf.data(), sendLen);
if (result != HasReturnvaluesIF::RETURN_OK) {
return;
}
// Receive back port, error byte and ping reply
recvLen = 3;
result = i2cRead(bpxInfo.fd, replyBuf.data(), recvLen);
if (result != HasReturnvaluesIF::RETURN_OK) {
return;
}
sif::info << "Ping reply:" << std::endl;
arrayprinter::print(replyBuf.data(), recvLen);
if (replyBuf[2] != 0x42) {
sif::warning << "Received ping reply not expected value 0x42" << std::endl;
}
}
void I2cTestClass::battPeriodic() {
UnixFileGuard fileHelper(i2cdev, &bpxInfo.fd, O_RDWR, "I2cTestClass::sendMessage");
if (fileHelper.getOpenResult() != HasReturnvaluesIF::RETURN_OK) {
sif::error << "Opening I2C device" << i2cdev << " failed" << std::endl;
return;
}
if (ioctl(bpxInfo.fd, I2C_SLAVE, bpxInfo.addr) < 0) {
sif::error << "Failed to acquire bus access and/or talk to slave" << std::endl;
}
cmdBuf[0] = BpxBattery::PORT_GET_HK;
sendLen = 1;
ReturnValue_t result = i2cWrite(bpxInfo.fd, cmdBuf.data(), sendLen);
if (result != HasReturnvaluesIF::RETURN_OK) {
return;
}
// Receive back HK set
recvLen = 23;
result = i2cRead(bpxInfo.fd, replyBuf.data(), recvLen);
if (result != HasReturnvaluesIF::RETURN_OK) {
return;
}
sif::info << "HK reply:" << std::endl;
arrayprinter::print(replyBuf.data(), recvLen);
}
ReturnValue_t I2cTestClass::i2cWrite(int fd, uint8_t* data, size_t len) {
if (write(fd, data, len) != static_cast<ssize_t>(len)) {
sif::error << "Failed to write to I2C bus" << std::endl;
sif::error << "Error " << errno << ": " << strerror(errno) << std::endl;
return HasReturnvaluesIF::RETURN_FAILED;
}
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t I2cTestClass::i2cRead(int fd, uint8_t* data, size_t len) {
if (read(fd, data, len) != static_cast<ssize_t>(len)) {
sif::error << "Failed to read from I2C bus" << std::endl;
sif::error << "Error " << errno << ": " << strerror(errno) << std::endl;
return HasReturnvaluesIF::RETURN_FAILED;
}
return HasReturnvaluesIF::RETURN_OK;
}