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add guarded vTaskDelay calls on select fnc #148

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add guarded vTaskDelay calls on select fnc #148

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3 changes: 3 additions & 0 deletions src/libmodbus/modbus-rtu.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1268,6 +1268,9 @@ static int _modbus_rtu_select(modbus_t *ctx, fd_set *rset,
if (s_rc >= length_to_read) {
break;
}
#ifdef INCLUDE_vTaskDelay
vTaskDelay(1);
#endif
} while ((millis() - start) < wait_time_millis);

if (s_rc == 0) {
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3 changes: 3 additions & 0 deletions src/libmodbus/modbus-tcp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -844,6 +844,9 @@ static int _modbus_tcp_select(modbus_t *ctx, fd_set *rset, struct timeval *tv, i
if (s_rc >= length_to_read) {
break;
}
#ifdef INCLUDE_vTaskDelay
vTaskDelay(1);
#endif
} while ((millis() - start) < wait_time_millis && ctx_tcp->client->connected());
#else
while ((s_rc = select(ctx->s+1, rset, NULL, NULL, tv)) == -1) {
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