@Jamu
Ok. So this exact error happens to me when I put the line MP.RecvTimeout(MP_RECV_POLLING); on the setup of my Sub1 code.
When I put this line only on the setup of my Main code it works perfectly.
I know you said you already tried it, but I'll ask you to try again and make sure the polling is happening only in the main core. I'm also providing code for both cores so you can see where in the code I made the change.
MAIN:
/*
* Main.ino - MP Example to communicate message data
* Copyright 2019 Sony Semiconductor Solutions Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef SUBCORE
#error "Core selection is wrong!!"
#endif
#include <MP.h>
int subcore = 1; /* Communication with SubCore1 */
void setup()
{
int ret = 0;
Serial.begin(115200);
while (!Serial);
/* Launch SubCore1 */
ret = MP.begin(subcore);
if (ret < 0) {
printf("MP.begin error = %d\n", ret);
}
randomSeed(100);
MP.RecvTimeout(MP_RECV_POLLING);
}
void loop()
{
int ret;
uint32_t snddata;
uint32_t rcvdata;
int8_t sndid = 100; /* user-defined msgid */
int8_t rcvid;
snddata = random(32767);
/* Echo back from SubCore */
printf("Send: id=%d data=0x%08lx\n", sndid, snddata);
ret = MP.Send(sndid, snddata, subcore);
if (ret < 0) {
printf("MP.Send error = %d\n", ret);
}
/* Timeout 1000 msec */
MP.RecvTimeout(1000);
ret = MP.Recv(&rcvid, &rcvdata, subcore);
if (ret < 0) {
printf("MP.Recv error = %d\n", ret);
}
printf("Recv: id=%d data=0x%08lx : %s\n", rcvid, rcvdata,
(snddata == rcvdata) ? "Success" : "Fail");
delay(1000);
}
SUBCORE1
/*
* Sub1.ino - MP Example to communicate message data
* Copyright 2019 Sony Semiconductor Solutions Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if (SUBCORE != 1)
#error "Core selection is wrong!!"
#endif
#include <MP.h>
void setup()
{
int ret = 0;
ret = MP.begin();
if (ret < 0) {
errorLoop(2);
}
}
void loop()
{
int ret;
int8_t msgid;
uint32_t msgdata;
/* Echo back */
ret = MP.Recv(&msgid, &msgdata);
if (ret < 0) {
errorLoop(3);
}
ret = MP.Send(msgid, msgdata);
if (ret < 0) {
errorLoop(4);
}
}
void errorLoop(int num)
{
int i;
while (1) {
for (i = 0; i < num; i++) {
ledOn(LED0);
delay(300);
ledOff(LED0);
delay(300);
}
delay(1000);
}
}
