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// Interrupt table relocation test, based on the 'interrupt_in' test
// It will test an interrupt pin before and after the interrupt table is relocated
// Works only on LPC1768
#include "test_env.h"
#include "cmsis_nvic.h"
#include <string.h>
#define PIN_IN (p5)
#define PIN_OUT (p25)
#define NUM_VECTORS (16+33)
DigitalOut out(PIN_OUT);
DigitalOut myled(LED1);
volatile int checks = 0;
uint32_t int_table[NUM_VECTORS] __attribute__ ((aligned(256)));
#define FALLING_EDGE_COUNT 5
void flipper() {
for (int i = 0; i < FALLING_EDGE_COUNT; i++) {
out = 1;
wait(0.2);
out = 0;
wait(0.2);
}
}
void in_handler() {
checks++;
myled = !myled;
}
static bool test_once() {
InterruptIn in(PIN_IN);
checks = 0;
printf("Interrupt table location: 0x%08X\r\n", SCB->VTOR);
in.rise(NULL);
in.fall(in_handler);
flipper();
in.fall(NULL);
bool result = (checks == FALLING_EDGE_COUNT);
printf("Falling edge checks counted: %d ... [%s]\r\n", checks, result ? "OK" : "FAIL");
return result;
}
int main() {
MBED_HOSTTEST_TIMEOUT(15);
MBED_HOSTTEST_SELECT(default_auto);
MBED_HOSTTEST_DESCRIPTION(Interrupt vector relocation);
MBED_HOSTTEST_START("MBED_A18");
// First test, no table reallocation
{
printf("Starting first test (interrupts not relocated).\r\n");
bool ret = test_once();
if (ret == false) {
MBED_HOSTTEST_RESULT(false);
}
}
// Relocate interrupt table and test again
{
printf("Starting second test (interrupts relocated).\r\n");
memcpy(int_table, (void*)SCB->VTOR, sizeof(int_table));
SCB->VTOR = (uint32_t)int_table;
bool ret = test_once();
if (ret == false) {
MBED_HOSTTEST_RESULT(false);
}
}
MBED_HOSTTEST_RESULT(true);
}
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