WIP debugging arduino puzzle module driver

1 files changed, 17 insertions, 3 deletions

diff --git a/lib/pbdrv/drv/arduino/mod.cpp b/lib/pbdrv/drv/arduino/mod.cpp
index c7bbe45..2113ba2 100644
--- a/lib/pbdrv/drv/arduino/mod.cpp
+++ b/lib/pbdrv/drv/arduino/mod.cpp
@@ -8,6 +8,7 @@
 #include <stdlib.h>
 #include <stdint.h>
 
+#include "../../pb.h"
 #include "mod.h"
 
 static void recv_event(int bytes) {
@@ -22,12 +23,25 @@ static void recv_event(int bytes) {
 
 void pbdrv_setup() {
 	Wire.begin((int) PBDRV_MOD_ADDR);
+	Wire.setWireTimeout(PB_TIMEOUT_US, true);
+	Wire.setClock(PB_CLOCK_SPEED_HZ);
 	Wire.onReceive(recv_event);
 }
 
 __weak void pbdrv_i2c_send(i2c_addr_t addr, const uint8_t * buf, size_t sz) {
-	Wire.beginTransmission((int) addr);
-	Wire.write(buf, sz);
-	Wire.endTransmission();
+	uint8_t error;
+	uint8_t retry = 4;
+	do {
+		error = 0;
+		Wire.beginTransmission((int) addr);
+		size_t written = Wire.write(buf, sz);
+		if (written != sz)
+			error++;
+		error += Wire.endTransmission(true);
+		Wire.setWireTimeout(PB_TIMEOUT_US, true);
+
+		if(retry == 0) break;
+		retry--;
+	} while (error);
 }