Fix UART

UART needs to be initialized along with configure_io() to work

Author: Kaweees

firmware/chipignite/polysat/arduino/arduino.ino

@@ -0,0 +1,52 @@
+// Constants
+#define BAUD_RATE 9600
+
+// Variables
+String receivedData = "";
+unsigned long lastReceiveTime = 0;
+const unsigned long DISPLAY_TIMEOUT = 500; // ms
+
+void setup() {
+  Serial.begin(BAUD_RATE); // Initialize serial communication with computer
+  Serial1.begin(BAUD_RATE); // Initialize serial communication with chip
+
+  Serial.println("Chip Serial Monitor Started");
+  Serial.println("Waiting for data...");
+}
+
+void loop() {
+  // Read data from the chip
+  while (Serial1.available() > 0) {
+    char inByte = Serial1.read();
+    receivedData += inByte;
+    lastReceiveTime = millis();
+  }
+
+  // Print complete messages after timeout
+  if (receivedData.length() > 0 && (millis() - lastReceiveTime > DISPLAY_TIMEOUT)) {
+    Serial.print("Received: ");
+
+    // Print as ASCII
+    Serial.print("ASCII: \"");
+    Serial.print(receivedData);
+    Serial.print("\" | HEX: ");
+
+    // Print as HEX
+    for (int i = 0; i < receivedData.length(); i++) {
+      char c = receivedData.charAt(i);
+      if (c < 0x10) Serial.print("0");
+      Serial.print(c, HEX);
+      Serial.print(" ");
+    }
+
+    Serial.println();
+    receivedData = "";
+  }
+
+  // Send data to chip if entered in Serial Monitor
+  if (Serial.available() > 0) {
+    String input = Serial.readStringUntil('\n');
+    Serial1.println(input);
+    Serial.println("Sent: " + input);
+  }
+}

firmware/chipignite/polysat/arduino/reader.ino

@@ -81,6 +81,10 @@ void configure_io() {
   reg_mprj_io_36 = GPIO_MODE_MGMT_STD_INPUT_NOPULL;
   reg_mprj_io_37 = GPIO_MODE_MGMT_STD_INPUT_NOPULL;
 
+
+  // Initialize UART
+  uart_init();
+
   // Initiate the serial transfer to configure IO
   reg_mprj_xfer = 1;
   while (reg_mprj_xfer == 1);
@@ -121,9 +125,6 @@ void main() {
   // Configure IO pins including UART pins
   configure_io();
 
-  // Initialize UART
-  uart_init();
-
   // Configure All LA probes as inputs to the cpu
   reg_la0_oenb = reg_la0_iena = 0x00000000; // [31:0]
   reg_la1_oenb = reg_la1_iena = 0x00000000; // [63:32]
@@ -159,10 +160,12 @@ void main() {
 
     if (!pulse) {
       led_off();
-      reg_mprj_io_33 = 1; // Set GPIO 33 high
+      // Set GPIO 33 low (bit 1)
+      gpio_clear(33);
     } else {
       led_on();
-      reg_mprj_io_33 = 0; // Set GPIO 33 low
+      // Set GPIO 33 high (bit 1)
+      gpio_set(33, true);
     }
     pulse = !pulse;