ChibiOS Free Embedded RTOS

Problem still exists. If we pass a variable to the mailbox, then everything is fine.

c1.png
Debug terminal
post -> 0
fetch -> 0
post -> 1
post -> 2
post -> 3
fetch -> 1
post -> 4
post -> 5
post -> 6
fetch -> 2
post -> 7
post -> 8
post -> 9
fetch -> 3
post -> 10
post -> 11
post -> 12
fetch -> 4 ...

Everything works on a different board.
Apparently, there was a hardware error.
For a long time I've been using the system and mailboxes, I've never had any problems before.
Giovanni, thanks for the excellent OS!

Thanks, I tried your advice, it did not help.

The problem disappears only if you remove the delay of 30 ms after sending CAN messages. Then messages from the mailbox are not lost.
But the delay is needed not to overload the CANbus

canTransmit(&CAND1, CAN_ANY_MAILBOX, &txmsg, MS2ST(100 ...

simple example, compiles without errors and warnings
chibios 16.1.9


#include "ch.h"
#include "hal.h"

#define MODULE_ID 222
#define CAN_BUFFER_SIZE 32

mailbox_t can_send_mailbox;
msg_t can_send_buffer[CAN_BUFFER_SIZE];

static const CANConfig cancfg = {CAN_MCR_ABOM | CAN_MCR_AWUM ...

/*
* HAL driver system settings.
*/
#define STM32_NO_INIT FALSE
#define STM32_HSI_ENABLED TRUE // default FALSE
#define STM32_LSI_ENABLED FALSE
#define STM32_HSE_ENABLED TRUE
#define STM32_LSE_ENABLED FALSE
#define STM32_SW STM32_SW_PLL // system clock mux
#define STM32_PLLSRC STM32_PLLSRC ...

With this configuration, writing or erase to the internal flash causes an error.

#define STM32_HSI_ENABLED FALSE
#define STM32_LSI_ENABLED FALSE
#define STM32_HSE_ENABLED TRUE
#define STM32_LSE_ENABLED FALSE

If I resolve the internal and external clock, then everything works.

#define STM32_HSI ...

I just started with this calculator, it is the same error
I am attaching the file correct calculation...

testhal\STM32\STM32F1xx\CAN\main.c
/*
* Internal loopback mode, 500KBaud, automatic wakeup, automatic recover
* from abort mode.
* See section 22.7.7 on the STM32 reference manual.
*/
static const CANConfig cancfg = {
CAN_MCR_ABOM | CAN_MCR_AWUM | CAN_MCR_TXFP,
CAN_BTR_LBKM ...

I compiled a simple example.
Chibios 162 is more compact.

#include "ch.h"
#include "hal.h"


static THD_WORKING_AREA(waThread1, 128);
static THD_FUNCTION(Thread1, arg) {

(void)arg;
chRegSetThreadName("blinker");
while (true) {
palSetPad(GPIOD, GPIOD_LED3); /* Orange&#46 ...

I did it
include $(CHIBIOS)/os/hal/boards/OLIMEX_STM32_E407_REV_D/board.mk

I have separately:
stm32f4discovery
http://thumbs.ebaystatic.com/images/g/cC4AAOSwBLlVE9EV/s-l96.jpg

and

http://g-search1.alicdn.com/bao/uploaded/i3/T1NlBGFJRbXXXXXXXX_!!0-item_pic&#46 ...