Peter M. Groen / libmodbus

Commit 2c132b040643e209c1978dfd660702f71aa76fce

Authored by Stéphane Raimbault
1 parent 1a4fb4eb

Fix receiving of incorrect queries in write_single and mask_write_register 

Thank you very much James Nutaro.
Inline Side-by-side
Showing 1 changed file with 2 additions and 2 deletions
src/modbus.c
  View file @2c132b0
... ... @@ -1223,7 +1223,7 @@ static int write_single(modbus_t *ctx, int function, int addr, int value)
1223 1223 rc = send_msg(ctx, req, req_length);
1224 1224 if (rc > 0) {
1225 1225 /* Used by write_bit and write_register */
1226   - uint8_t rsp[_MIN_REQ_LENGTH];
  1226 + uint8_t rsp[MAX_MESSAGE_LENGTH];
1227 1227  
1228 1228 rc = _modbus_receive_msg(ctx, rsp, MSG_CONFIRMATION);
1229 1229 if (rc == -1)
... ... @@ -1389,7 +1389,7 @@ int modbus_mask_write_register(modbus_t *ctx, int addr, uint16_t and_mask, uint1
1389 1389 rc = send_msg(ctx, req, req_length);
1390 1390 if (rc > 0) {
1391 1391 /* Used by write_bit and write_register */
1392   - uint8_t rsp[_MIN_REQ_LENGTH];
  1392 + uint8_t rsp[MAX_MESSAGE_LENGTH];
1393 1393  
1394 1394 rc = _modbus_receive_msg(ctx, rsp, MSG_CONFIRMATION);
1395 1395 if (rc == -1)
... ...