Commit 2284aae2b8c7beec06e3c9847ee89169b4ac8e37
1 parent
e10ee2d5
Explicit check against Modbus broadcast address
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2 additions
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2 deletions
src/modbus.c
| ... | ... | @@ -1055,8 +1055,8 @@ int modbus_reply(modbus_t *ctx, const uint8_t *req, |
| 1055 | 1055 | break; |
| 1056 | 1056 | } |
| 1057 | 1057 | |
| 1058 | - /* Suppress any response when the request was a broadcast */ | |
| 1059 | - return slave ? send_msg(ctx, rsp, rsp_length) : 0; | |
| 1058 | + /* Suppress any responses when the request was a broadcast */ | |
| 1059 | + return (slave == MODBUS_BROADCAST_ADDRESS) ? 0 : send_msg(ctx, rsp, rsp_length); | |
| 1060 | 1060 | } |
| 1061 | 1061 | |
| 1062 | 1062 | int modbus_reply_exception(modbus_t *ctx, const uint8_t *req, | ... | ... |