Add a function to parse the entire payload as a float.

2 files changed, 9 insertions, 0 deletions

diff --git a/src/uds/uds.c b/src/uds/uds.c
index 443b05a..b3f2cda 100644
--- a/src/uds/uds.c
+++ b/src/uds/uds.c
@@ -1,5 +1,6 @@
 #include <uds/uds.h>
 #include <bitfield/bitfield.h>
+#include <canutil/read.h>
 #include <string.h>
 #include <limits.h>
 #include <stddef.h>
@@ -241,3 +242,9 @@ DiagnosticResponse diagnostic_receive_can_frame(DiagnosticShims* shims,
     }
     return response;
 }
+
+float diagnostic_payload_to_float(const DiagnosticResponse* response) {
+    return bitfield_parse_float(response->payload,
+            response->payload_length, 0,
+            response->payload_length * CHAR_BIT, 1.0, 0);
+}
diff --git a/src/uds/uds.h b/src/uds/uds.h
index 091d3c9..78f70e1 100644
--- a/src/uds/uds.h
+++ b/src/uds/uds.h
@@ -83,6 +83,8 @@ DiagnosticResponse diagnostic_receive_can_frame(DiagnosticShims* shims,
         const uint16_t arbitration_id, const uint8_t data[],
         const uint8_t size);
 
+float diagnostic_payload_to_float(const DiagnosticResponse* response);
+
 /* Public: Render a DiagnosticResponse as a string into the given buffer.
  *
  * TODO implement this