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Added commands to end the simulation with a zero or a non zero exit code #363

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Added commands to end the simulation with a zero or a non zero exit code #363

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2 changes: 2 additions & 0 deletions simavr/sim/avr/avr_mcu_section.h
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ enum {
SIMAVR_CMD_VCD_START_TRACE,
SIMAVR_CMD_VCD_STOP_TRACE,
SIMAVR_CMD_UART_LOOPBACK,
SIMAVR_CMD_EXIT_CODE_0,
SIMAVR_CMD_EXIT_CODE_1,
};

#if __AVR__
Expand Down
22 changes: 22 additions & 0 deletions simavr/sim/sim_cmds.c
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Expand Up @@ -180,6 +180,26 @@ _simavr_cmd_uart_loopback(
return 0;
}

static int
_simavr_cmd_exit_code_0(
avr_t * avr,
uint8_t v,
void * param)
{
exit(0);
return 0; //we never execute this, but it prevents a compiler warning
}

static int
_simavr_cmd_exit_code_1(
avr_t * avr,
uint8_t v,
void * param)
{
exit(1);
return 0; //we never execute this, but it prevents a compiler warning
}

void
avr_cmd_init(
avr_t * avr)
Expand All @@ -190,4 +210,6 @@ avr_cmd_init(
avr_cmd_register(avr, SIMAVR_CMD_VCD_START_TRACE, &_simavr_cmd_vcd_start_trace, NULL);
avr_cmd_register(avr, SIMAVR_CMD_VCD_STOP_TRACE, &_simavr_cmd_vcd_stop_trace, NULL);
avr_cmd_register(avr, SIMAVR_CMD_UART_LOOPBACK, &_simavr_cmd_uart_loopback, NULL);
avr_cmd_register(avr, SIMAVR_CMD_EXIT_CODE_0, &_simavr_cmd_exit_code_0, NULL);
avr_cmd_register(avr, SIMAVR_CMD_EXIT_CODE_1, &_simavr_cmd_exit_code_1, NULL);
}
7 changes: 4 additions & 3 deletions tests/atmega88_uart_echo.c
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Expand Up @@ -19,6 +19,7 @@
* The macro adds a section to the ELF file with useful
* information for the simulator
*/
#define F_CPU 8000000L
#include "avr_mcu_section.h"
AVR_MCU(F_CPU, "atmega88");
// tell simavr to listen to commands written in this (unused) register
Expand Down Expand Up @@ -95,7 +96,7 @@ int main()
cli();
printf("Received: %s", buffer);

// this quits the simulator, since interupts are off
// this is a "feature" that allows running tests cases and exit
sleep_cpu();

// this tells simavr to quit with error code 1
GPIOR0 = SIMAVR_CMD_EXIT_CODE_1;
}