rusEFI needs K-line firmware support #3248

firmware/hw_layer/kline.cpp

@@ -1,17 +1,20 @@
 #include "pch.h"
 #include "kline.h"
 
-#if EFI_PROD_CODE
+#ifdef EFI_KLINE
+static SerialDriver* const klDriver = KLINE_SERIAL_DEVICE;
 static THD_WORKING_AREA(klThreadStack, UTILITY_THREAD_STACK_SIZE);
 
 void kLineThread(void*)
 {
     while(1)
     {
-        // todo: read one by in loop
+        uint8_t ch = 0;
+        chnReadTimeout(klDriver, &ch, 1, KLINE_READ_TIMEOUT);
         // to begin with just write byte to console
-        // efiPrintf
-        chThdSleepMilliseconds(50);
+        if (ch != 0) {
+            efiPrintf("kline: %c", ch);
+        }
     }
 }
 #endif
@@ -19,7 +22,17 @@ void kLineThread(void*)
 void initKLine() {
 
 #ifdef EFI_KLINE
+	static const SerialConfig cfg = {
+		#if EFI_PROD_CODE
+			.speed = KLINE_BAUD_RATE,
+			.cr1 = 0,
+			.cr2 = USART_CR2_STOP1_BITS | USART_CR2_LINEN,
+			.cr3 = 0
+		#endif // EFI_PROD_CODE
+	};
+
+	sdStart(klDriver, &cfg);
+
     chThdCreateStatic(klThreadStack, sizeof(klThreadStack), NORMALPRIO + 1, kLineThread, nullptr);
-    // todo: conditional uart initialization matching 2003 miata k-line
 #endif
 }

firmware/hw_layer/kline.h

@@ -1 +1,12 @@
+#pragma once
+
+
+#define KLINE_SERIAL_DEVICE (&SD2)
+
+// The standard transmission rate
+#define KLINE_BAUD_RATE 10400
+
+#define KLINE_READ_TIMEOUT 50
+
+
 void initKLine();