Attempt to print entire payload and fail.

[apps/low-level-can-service.git] / src / isotp / isotp.c

diff --git a/src/isotp/isotp.c b/src/isotp/isotp.c
index f5b2079..6522f7a 100644 (file)
--- a/src/isotp/isotp.c
+++ b/src/isotp/isotp.c
@@ -2,16 +2,9 @@
 #include <isotp/receive.h>
 #include <bitfield/bitfield.h>
 
-const uint16_t MAX_ISO_TP_MESSAGE_SIZE = 4096;
-const uint16_t MAX_CAN_FRAME_SIZE = 8;
 const uint8_t ISO_TP_DEFAULT_RESPONSE_TIMEOUT = 100;
 const bool ISO_TP_DEFAULT_FRAME_PADDING_STATUS = true;
 
-// TODO why isn't this picked up from the header?
-extern IsoTpHandle isotp_receive(IsoTpShims* shims, const uint16_t arbitration_id,
-        IsoTpMessageReceivedHandler callback);
-
-
 /* void isotp_set_timeout(IsoTpHandler* handler, uint16_t timeout_ms) { */
     /* handler->timeout_ms = timeout_ms; */
 /* } */
@@ -28,28 +21,52 @@ IsoTpShims isotp_init_shims(LogShim log, SendCanMessageShim send_can_message,
 
 void isotp_message_to_string(const IsoTpMessage* message, char* destination,
         size_t destination_length) {
-    snprintf(destination, destination_length,"ID: 0x%02x, Payload: 0x%llx",
-            // TODO the payload may be backwards here
-            message->arbitration_id, message->payload);
+    // TODO why is this still not printing the entire payload?
+    snprintf(destination, destination_length, "ID: 0x%02x, Payload: 0x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+            message->arbitration_id,
+            message->payload[0],
+            message->payload[1],
+            message->payload[2],
+            message->payload[3],
+            message->payload[4],
+            message->payload[5],
+            message->payload[6],
+            message->payload[7]);
 }
 
-void isotp_receive_can_frame(IsoTpShims* shims, IsoTpHandle* handle,
+IsoTpMessage isotp_receive_can_frame(IsoTpShims* shims, IsoTpHandle* handle,
         const uint16_t arbitration_id, const uint8_t data[],
         const uint8_t data_length) {
+    IsoTpMessage message = {
+        arbitration_id: arbitration_id,
+        completed: false,
+        payload: {0},
+        size: 0
+    };
+
     if(data_length < 1) {
-        return;
+        return message;
     }
 
     if(handle->type == ISOTP_HANDLE_RECEIVING) {
         if(handle->receive_handle.arbitration_id != arbitration_id) {
-            return;
+            if(shims->log != NULL)  {
+                shims->log("The arb ID 0x%x doesn't match the expected rx ID 0x%x",
+                        arbitration_id, handle->receive_handle.arbitration_id);
+            }
+            return message;
         }
     } else if(handle->type == ISOTP_HANDLE_SENDING) {
         if(handle->send_handle.receiving_arbitration_id != arbitration_id) {
-            return;
+            if(shims->log != NULL) {
+                shims->log("The arb ID 0x%x doesn't match the expected tx continuation ID 0x%x",
+                        arbitration_id, handle->send_handle.receiving_arbitration_id);
+            }
+            return message;
         }
     } else {
         shims->log("The ISO-TP handle is corrupt");
+        return message;
     }
 
     IsoTpProtocolControlInformation pci = (IsoTpProtocolControlInformation)
@@ -67,12 +84,13 @@ void isotp_receive_can_frame(IsoTpShims* shims, IsoTpHandle* handle,
 
     switch(pci) {
         case PCI_SINGLE: {
-            IsoTpMessage message = {
-                arbitration_id: arbitration_id,
-                payload: payload,
-                size: payload_length
-            };
-
+            if(payload_length > 0) {
+                memcpy(message.payload, payload, payload_length);
+            }
+            message.size = payload_length;
+            message.completed = true;
+            handle->success = true;
+            handle->completed = true;
             isotp_handle_single_frame(handle, &message);
             break;
          }
@@ -80,4 +98,5 @@ void isotp_receive_can_frame(IsoTpShims* shims, IsoTpHandle* handle,
             shims->log("Only single frame messages are supported");
             break;
     }
+    return message;
 }