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.
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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) @@ -1223,7 +1223,7 @@ static int write_single(modbus_t *ctx, int function, int addr, int value)
1223 rc = send_msg(ctx, req, req_length); 1223 rc = send_msg(ctx, req, req_length);
1224 if (rc > 0) { 1224 if (rc > 0) {
1225 /* Used by write_bit and write_register */ 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 rc = _modbus_receive_msg(ctx, rsp, MSG_CONFIRMATION); 1228 rc = _modbus_receive_msg(ctx, rsp, MSG_CONFIRMATION);
1229 if (rc == -1) 1229 if (rc == -1)
@@ -1389,7 +1389,7 @@ int modbus_mask_write_register(modbus_t *ctx, int addr, uint16_t and_mask, uint1 @@ -1389,7 +1389,7 @@ int modbus_mask_write_register(modbus_t *ctx, int addr, uint16_t and_mask, uint1
1389 rc = send_msg(ctx, req, req_length); 1389 rc = send_msg(ctx, req, req_length);
1390 if (rc > 0) { 1390 if (rc > 0) {
1391 /* Used by write_bit and write_register */ 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 rc = _modbus_receive_msg(ctx, rsp, MSG_CONFIRMATION); 1394 rc = _modbus_receive_msg(ctx, rsp, MSG_CONFIRMATION);
1395 if (rc == -1) 1395 if (rc == -1)