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#include "legato.h"
#define N_UARTS 2
#define GPIO_START 21
#define GPIO_END 37
#define BUFFER_LEN 256
static const char* TTY_AT_PATH = "/dev/ttyAT";
static int configureGpio (int fd, char* buffer, bool* res) {
int resIndex = 0;
for (int i = GPIO_START; i <= GPIO_END; i++) {
int strSize = sprintf(buffer, "AT+WIOCFG=%d,16\r", i);
LE_INFO("Running AT command on GPIO %d (%s)", i, buffer);
write(fd, buffer, strSize);
int nRead = read(fd, buffer, BUFFER_LEN);
buffer[nRead + 1] = '\0';
LE_INFO("Got %s response for GPIO %d", buffer, i);
// if the return string matches OK
// we can consider this one a success
res[resIndex++] = strcmp(buffer, "OK") == 0;
}
return resIndex;
}
static int configureUart (int fd, char* buffer, bool* res) {
int resIndex = 0;
for (int i = 1; i <= N_UARTS; i++) {
int strSize = sprintf(buffer, "AT!MAPUART=17,%d\r", i);
LE_INFO("Running AT command on UART %d (%s)", i, buffer);
write(fd, buffer, strSize);
int nRead = read(fd, buffer, BUFFER_LEN);
buffer[nRead + 1] = '\0';
LE_INFO("Got %s response for UART %d", buffer, i);
// if the return string matches OK
// we can consider this one a success
res[resIndex++] = strcmp(buffer, "OK") == 0;
}
return resIndex;
}
COMPONENT_INIT {
char buffer[BUFFER_LEN];
bool res[BUFFER_LEN];
int serialFd = le_tty_Open(TTY_AT_PATH, O_RDWR);
le_tty_SetBaudRate(serialFd, LE_TTY_SPEED_9600);
le_tty_SetCanonical(serialFd);
int n = configureGpio(serialFd, buffer, res);
// seek to the right location in res
configureUart(serialFd, buffer, res + n);
le_tty_Close(serialFd);
}
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