1 files changed, 36 insertions, 0 deletions
diff --git a/src/gpio.c b/src/gpio.c
index 0ccfd6b..9c00805 100644
--- a/src/gpio.c
+++ b/src/gpio.c
@@ -42,3 +42,39 @@ int modemPowerToggle(int pinNum) {
   gpiod_chip_close(chip);
   return 0;
 }
+
+int checkPinVal(int pinNum) {
+  int pinVal = -1;
+  struct gpiod_chip *chip;
+  struct gpiod_line *line;
+
+  chip = gpiod_chip_open("/dev/gpiochip0");
+  if (!chip) {
+    perror("Error opening GPIO chip");
+    return -1;
+  }
+
+  line = gpiod_chip_get_line(
+      chip, pinNum); // Replace with the desired GPIO pin number
+  if (!line) {
+    perror("Error getting GPIO line");
+    gpiod_chip_close(chip);
+    return -1;
+  }
+
+  if (gpiod_line_request_input(line, "cellular modem power status") < 0) {
+    perror("Error setting GPIO line as input");
+    gpiod_chip_close(chip);
+    return -1;
+  }
+
+  pinVal = gpiod_line_get_value(line);
+  if (pinVal < 0) {
+    perror("Error getting GPIO line value");
+    gpiod_chip_close(chip);
+    return -1;
+  }
+
+  gpiod_chip_close(chip);
+  return pinVal;
+}