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Cellular: For ublox modem, read '@' char first then send data. #12499

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Mar 4, 2020
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Cellular: For ublox modem, read '@' char first then send data. #12499

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12 changes: 6 additions & 6 deletions features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularStack.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@
*/

#include "UBLOX_AT_CellularStack.h"
#include "mbed_poll.h"
#include "rtos/ThisThread.h"

using namespace mbed;
using namespace mbed_cellular_util;
Expand Down Expand Up @@ -168,17 +168,16 @@ nsapi_size_or_error_t UBLOX_AT_CellularStack::socket_sendto_impl(CellularSocket
MBED_ASSERT(socket->id != -1);

int sent_len = 0;
pollfh fhs;
fhs.fh = _at.get_file_handle();
fhs.events = POLLIN;
uint8_t ch = 0;

if (socket->proto == NSAPI_UDP) {
if (size > UBLOX_MAX_PACKET_SIZE) {
return NSAPI_ERROR_PARAMETER;
}
_at.cmd_start_stop("+USOST", "=", "%d%s%d%d", socket->id, address.get_ip_address(), address.get_port(), size);
_at.resp_start("@", true);
rtos::ThisThread::sleep_for(50); //wait for 50ms before sending data

(void)poll(&fhs, 1, 50);
_at.write_bytes((uint8_t *)data, size);

_at.resp_start("+USOST:");
Expand All @@ -200,8 +199,9 @@ nsapi_size_or_error_t UBLOX_AT_CellularStack::socket_sendto_impl(CellularSocket
blk = count;
}
_at.cmd_start_stop("+USOWR", "=", "%d%d", socket->id, blk);
_at.resp_start("@", true);
rtos::ThisThread::sleep_for(50); //wait for 50ms before sending data

(void)poll(&fhs, 1, 50);
_at.write_bytes((uint8_t *)buf, blk);

_at.resp_start("+USOWR:");
Expand Down