diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/obd2/obd2.c | 39 | ||||
| -rw-r--r-- | src/obd2/obd2.h | 8 |
2 files changed, 24 insertions, 23 deletions
diff --git a/src/obd2/obd2.c b/src/obd2/obd2.c index d8ef190..1dcb827 100644 --- a/src/obd2/obd2.c +++ b/src/obd2/obd2.c @@ -1,4 +1,5 @@ #include <obd2/obd2.h> +#include <arpa/inet.h> #define MODE_RESPONSE_OFFSET 0x40 #define NEGATIVE_RESPONSE_MODE 0x7f @@ -12,9 +13,9 @@ DiagnosticShims diagnostic_init_shims(LogShim log, SendCanMessageShim send_can_message, SetTimerShim set_timer) { DiagnosticShims shims = { + log: log, send_can_message: send_can_message, - set_timer: set_timer, - log: log + set_timer: set_timer }; return shims; } @@ -32,11 +33,11 @@ DiagnosticRequestHandle diagnostic_request(DiagnosticShims* shims, uint8_t payload[MAX_DIAGNOSTIC_PAYLOAD_SIZE]; payload[MODE_BYTE_INDEX] = request->mode; if(request->pid_length > 0) { - copy_bytes_right_aligned(request->pid, sizeof(request->pid), + copy_bytes_right_aligned(&request->pid, sizeof(request->pid), PID_BYTE_INDEX, request->pid_length, payload, sizeof(payload)); } if(request->payload_length > 0) { - memcpy(payload[PID_BYTE_INDEX + request->pid_length], + memcpy(&payload[PID_BYTE_INDEX + request->pid_length], request->payload, request->payload_length); } @@ -46,15 +47,11 @@ DiagnosticRequestHandle diagnostic_request(DiagnosticShims* shims, handle.isotp_send_handle = isotp_send(&handle.isotp_shims, request->arbitration_id, payload, 1 + request->payload_length + request->pid_length, - // TODO is this ok to pass null here? NULL); handle.isotp_receive_handle = isotp_receive(&handle.isotp_shims, // TODO need to either always add 0x8 or let the user specify request->arbitration_id + 0x8, - // TODO this callback is mostly useful for debugging stuff as it - // doesn't have the internal state we need to complete the - // diagnositc request - can we pass NULL or will that 'splode? NULL); // when a can frame is received and passes to the diagnostic handle @@ -117,20 +114,21 @@ DiagnosticRequestHandle diagnostic_request(DiagnosticShims* shims, } DiagnosticRequestHandle diagnostic_request_pid(DiagnosticShims* shims, - DiagnosticPidRequestType pid_request_type, uint16_t pid, - DiagnosticResponseReceived callback) { + DiagnosticPidRequestType pid_request_type, uint16_t arbitration_id, + uint16_t pid, DiagnosticResponseReceived callback) { DiagnosticRequest request = { + arbitration_id: arbitration_id, mode: pid_request_type == DIAGNOSTIC_STANDARD_PID ? 0x1 : 0x22, - pid: pid + pid: pid, + pid_length: pid_request_type == DIAGNOSTIC_STANDARD_PID ? 1 : 2 }; return diagnostic_request(shims, &request, callback); } DiagnosticResponse diagnostic_receive_can_frame(DiagnosticShims* shims, - DiagnosticRequestHandle* handle, - const uint16_t arbitration_id, const uint8_t data[], - const uint8_t size) { + DiagnosticRequestHandle* handle, const uint16_t arbitration_id, + const uint8_t data[], const uint8_t size) { DiagnosticResponse response = { arbitration_id: arbitration_id, @@ -169,12 +167,15 @@ DiagnosticResponse diagnostic_receive_can_frame(DiagnosticShims* shims, // if it matched response.mode = handle->request.mode; if(handle->request.pid_length > 0 && message.size > 1) { - copy_bytes_right_aligned(handle->request.pid, sizeof(handle->request.pid), - PID_BYTE_INDEX, handle->request.pid_length, response.pid, - sizeof(response.pid)); + if(handle->request.pid_length == 2) { + response.pid = *(uint16_t*)&message.payload[PID_BYTE_INDEX]; + response.pid = ntohs(response.pid); + } else { + response.pid = message.payload[PID_BYTE_INDEX]; + } } - uint8_t payload_index = 1 + handle->request.pid_length; + uint8_t payload_index = 1 + handle->request.pid_length; response.payload_length = message.size - payload_index; if(response.payload_length > 0) { memcpy(response.payload, &message.payload[payload_index], @@ -182,7 +183,7 @@ DiagnosticResponse diagnostic_receive_can_frame(DiagnosticShims* shims, } response.success = true; } else { - shims->log("Response was for a mode %d request, not our mode %d request", + shims->log("Response was for a mode 0x%x request, not our mode 0x%x request", response.mode - MODE_RESPONSE_OFFSET, handle->request.mode); } diff --git a/src/obd2/obd2.h b/src/obd2/obd2.h index 7589483..2bb6c77 100644 --- a/src/obd2/obd2.h +++ b/src/obd2/obd2.h @@ -133,9 +133,9 @@ typedef enum { } DiagnosticPidRequestType; typedef struct { - SetTimerShim set_timer; - SendCanMessageShim send_can_message; LogShim log; + SendCanMessageShim send_can_message; + SetTimerShim set_timer; } DiagnosticShims; DiagnosticShims diagnostic_init_shims(LogShim log, @@ -147,8 +147,8 @@ DiagnosticRequestHandle diagnostic_request(DiagnosticShims* shims, // decide mode 0x1 / 0x22 based on pid type DiagnosticRequestHandle diagnostic_request_pid(DiagnosticShims* shims, - DiagnosticPidRequestType pid_request_type, uint16_t pid, - DiagnosticResponseReceived callback); + DiagnosticPidRequestType pid_request_type, uint16_t arbitration_id, + uint16_t pid, DiagnosticResponseReceived callback); DiagnosticRequestHandle diagnostic_request_malfunction_indicator_status( DiagnosticShims* shims, |