bool CGpio::InitU401Pins()
{
char buf[256];
int gpioNumber, direction;
FILE *cmd = NULL;
#ifndef WIN32
cmd = fopen("/opt/u401_cfg.txt", "r");
#else
cmd = fopen("E:\\u401_cfg.txt", "r");
#endif
if (cmd == NULL) {
_log.Log(LOG_ERROR, "%s: Failed to open /opt/u401_cfg.txt", __func__);
return false;
}
while (fgets(buf, sizeof(buf), cmd) != 0) {
// Decode U401 GPIOs as below:
//
// GPIO,DIR
// 0,out,
// 7,in,
std::string exportLine(buf);
//std::cout << "Processing line: " << exportLine;
std::vector<std::string> sresults;
StringSplit(exportLine, ",", sresults);
if (sresults.empty())
continue;
if (sresults[0] == "GPIO")
continue;
if (sresults.size() == 3)
{
gpioNumber = atoi(sresults[0].c_str());
if ((gpioNumber >= 0) && (gpioNumber < MAX_GPIO_U401)) {
if (sresults[1] == "out")
pins.push_back(CGpioPin(gpioNumber + CGPIO_STARTID_U401,
CGPIOPIN_U401, "gpio" + sresults[0], CGPIO_DIR_OUT, true));
else
pins.push_back(CGpioPin(gpioNumber + CGPIO_STARTID_U401,
CGPIOPIN_U401, "gpio" + sresults[0], CGPIO_DIR_IN, true));
}
else {
_log.Log(LOG_NORM, "GPIO: Ignoring unsupported pin '%s'", buf);
}
}
}
fclose(cmd);
if (pins.size() > 0) {
std::sort(pins.begin(), pins.end());
// debug
//for(std::vector<CGpioPin>::iterator it = pins.begin(); it != pins.end(); ++it) {
// CGpioPin pin=*it;
// std::cout << "Pin " << pin.GetId() << " : " << pin.GetLabel() << ", " << pin.GetDirection() << ", " << pin.GetIsExported() << std::endl;
//}
} else {
_log.Log(LOG_ERROR, "%s: Failed to detect any pins", __func__);
return false;
}
return true;
}
bool CGpio::InitPins()
{
int fd;
bool db_state = false;
char path[GPIO_MAX_PATH];
char szIdx[10];
char label[12];
std::vector<std::vector<std::string> > result;
boost::mutex::scoped_lock lock(m_pins_mutex);
pins.clear();
for (int gpio_pin = GPIO_PIN_MIN; gpio_pin <= GPIO_PIN_MAX; gpio_pin++)
{
snprintf(path, GPIO_MAX_PATH, "%s%d", GPIO_PATH, gpio_pin);
fd = open(path, O_RDONLY);
if (fd != -1) /* GPIO export found */
{
result = m_sql.safe_query("SELECT nValue FROM DeviceStatus WHERE (HardwareID==%d) AND (Unit==%d)",
m_HwdID, gpio_pin);
if (result.size() > 0)
db_state = atoi(result[0][0].c_str());
snprintf(label, sizeof(label), "GPIO pin %d", gpio_pin);
pins.push_back(CGpioPin(gpio_pin, label, GPIORead(gpio_pin, "value"), GPIORead(gpio_pin, "direction"), GPIORead(gpio_pin, "edge"), GPIORead(gpio_pin, "active_low"), -1, db_state));
//_log.Log(LOG_NORM, "GPIO: Pin %d added (value: %d, direction: %d, edge: %d, active_low: %d, db_state: %d)",
// gpio_pin, GPIORead(gpio_pin, "value"), GPIORead(gpio_pin, "direction"), GPIORead(gpio_pin, "edge"), GPIORead(gpio_pin, "active_low"), db_state);
close(fd);
if (GPIORead(gpio_pin, "direction") != 0)
continue;
snprintf(path, GPIO_MAX_PATH, "%s%d/value", GPIO_PATH, gpio_pin);
fd = pins.back().SetReadValueFd(open(path, O_RDWR)); // O_RDWR seems mandatory to clear interrupt (not sure why?)
if (fd != -1)
{
pinPass = gpio_pin;
m_thread_interrupt[gpio_pin] = boost::shared_ptr<boost::thread>(new boost::thread(boost::bind(&CGpio::InterruptHandler, this)));
while (pinPass != -1)
sleep_milliseconds(1);
}
}
}
return (pins.size() > 0);
}
/*
* static
* One-shot method to initialize pins
*
*/
bool CGpio::InitPins()
{
char buf[256];
bool exports[MAX_GPIO+1] = { false };
int gpioNumber;
FILE *cmd = NULL;
// 1. List exports and parse the result
#ifndef WIN32
cmd = popen("gpio exports", "r");
#else
cmd = fopen("E:\\exports.txt", "r");
#endif
while (fgets(buf, sizeof(buf), cmd) != 0) {
// Decode GPIO pin number from the output formatted as follows:
//
// GPIO Pins exported:
// 17: out 0 none
// 18: in 1 none
//
// 00000000001111111111
// 01234567890123456789
std::string exportLine(buf);
//std::cout << "Processing line: " << exportLine;
std::vector<std::string> sresults;
StringSplit(exportLine, " :", sresults);
if (sresults.empty())
continue;
if (sresults[0] == "GPIO")
continue;
if (sresults.size() >= 4)
{
gpioNumber = atoi(sresults[0].c_str());
if ((gpioNumber >= 0) && (gpioNumber <= MAX_GPIO)) {
exports[gpioNumber] = true;
}
else {
_log.Log(LOG_NORM, "GPIO: Ignoring unsupported pin '%s'", buf);
}
}
}
#ifndef WIN32
pclose(cmd);
#else
fclose(cmd);
#endif
// 2. List the full pin set and parse the result
#ifndef WIN32
cmd = popen("gpio readall", "r");
#else
cmd = fopen("E:\\readall.txt", "r");
#endif
while (fgets(buf, sizeof(buf), cmd) != 0) {
// Decode IN and OUT lines from the output formatted as follows:
//
// Old style (wiringPi<=2.16):
// +----------+-Rev1-+------+--------+------+-------+
// | wiringPi | GPIO | Phys | Name | Mode | Value |
// +----------+------+------+--------+------+-------+
// | 0 | 17 | 11 | GPIO 0 | IN | Low |
// | 1 | 18 | 12 | GPIO 1 | IN | Low |
// | 2 | 21 | 13 | GPIO 2 | IN | Low |
// | 3 | 22 | 15 | GPIO 3 | IN | Low |
// ...
//
// New style:
// +-----+-----+---------+------+---+--B Plus--+---+------+---------+-----+-----+
// | BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
// +-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
// | | | 3.3v | | | 1 || 2 | | | 5v | | |
// | 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | | | 5V | | |
// | 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | | | 0v | | |
// | 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT0 | TxD | 15 | 14 |
// ...
//
// 0000000000111111111122222222223333333333444444444455555555556666666666777777777
// 0123456789012345678901234567890123456789012345678901234567890123456789012345678
std::string line(buf);
std::vector<std::string> fields;
//std::cout << "Processing line: " << line;
StringSplit(line, "|", fields);
if (fields.size()<7)
continue;
//std::cout << "# fields: " << fields.size() << std::endl;
// trim each field
for (size_t i = 0; i < fields.size(); i++) {
fields[i]=stdstring_trim(fields[i]);
//std::cout << "fields[" << i << "] = '" << fields[i] << "'" << std::endl;
}
if (fields.size() == 7) {
// Old style
if (fields[0] != "wiringPi") {
gpioNumber = atoi(fields[1].c_str());
if ((gpioNumber >= 0) && (gpioNumber <= MAX_GPIO)) {
pins.push_back(CGpioPin(gpioNumber, "gpio" + fields[1] + " (" + fields[3] + ") on pin " + fields[2],
fields[4] == "IN", fields[4] == "OUT", exports[gpioNumber]));
} else {
_log.Log(LOG_NORM, "GPIO: Ignoring unsupported pin '%s'", fields[1].c_str());
}
}
} else if (fields.size() == 14) {
// New style
if (fields[1].length() > 0) {
gpioNumber = atoi(fields[1].c_str());
if ((gpioNumber >= 0) && (gpioNumber <= MAX_GPIO)) {
pins.push_back(CGpioPin(gpioNumber, "gpio" + fields[1] + " (" + fields[3] + ") on pin " + fields[6],
(fields[4] == "IN"), (fields[4] == "OUT"), exports[gpioNumber]));
} else {
_log.Log(LOG_NORM, "GPIO: Ignoring unsupported pin '%s'", fields[1].c_str());
}
}
if (fields[12].length() > 0) {
gpioNumber = atoi(fields[12].c_str());
if ((gpioNumber >= 0) && (gpioNumber <= MAX_GPIO)) {
pins.push_back(CGpioPin(gpioNumber, "gpio" + fields[12] + " (" + fields[10] + ") on pin " + fields[7],
fields[9] == "IN", fields[9] == "OUT", exports[gpioNumber]));
} else {
_log.Log(LOG_NORM, "GPIO: Ignoring unsupported pin '%s'", fields[12].c_str());
}
}
}
}
#ifndef WIN32
pclose(cmd);
#else
fclose(cmd);
#endif
if (pins.size() > 0) {
std::sort(pins.begin(), pins.end());
// debug
//for(std::vector<CGpioPin>::iterator it = pins.begin(); it != pins.end(); ++it) {
// CGpioPin pin=*it;
// std::cout << "Pin " << pin.GetId() << " : " << pin.GetLabel() << ", " << pin.GetIsInput() << ", " << pin.GetIsOutput() << ", " << pin.GetIsExported() << std::endl;
//}
} else {
_log.Log(LOG_ERROR, "GPIO: Failed to detect any pins, make sure you exported them!");
return false;
}
return true;
}