main.cpp

00001 // Interrupt table relocation test, based on the 'interrupt_in' test
00002 // It will test an interrupt pin before and after the interrupt table is relocated
00003 // Works only on LPC1768
00004 
00005 #include "test_env.h"
00006 #include "cmsis_nvic.h"
00007 #include "mbed_toolchain.h"
00008 #include <string.h>
00009 
00010 #if defined(TARGET_SAMR21G18A) || defined(TARGET_SAMD21J18A) || defined(TARGET_SAMD21G18A) 
00011 #define PIN_IN      (PB02)
00012 #define PIN_OUT     (PB03)
00013 #define NUM_VECTORS (16+28)
00014 
00015 #elif defined(TARGET_SAML21J18A)
00016 #define PIN_IN      (PB00)
00017 #define PIN_OUT     (PB01)
00018 #define NUM_VECTORS (16+29)
00019 
00020 #elif defined(TARGET_SAMG55J19)
00021 #define PIN_IN      (PA17)
00022 #define PIN_OUT     (PA18)
00023 #define NUM_VECTORS (16+50)
00024 
00025 #else
00026 #define PIN_IN      (p5)
00027 #define PIN_OUT     (p25)
00028 #define NUM_VECTORS (16+33)
00029 #endif
00030 
00031 DigitalOut out(PIN_OUT);
00032 DigitalOut myled(LED1);
00033 
00034 volatile int checks = 0;
00035 uint32_t int_table[NUM_VECTORS] MBED_ALIGN(256);
00036 
00037 #define FALLING_EDGE_COUNT 5
00038 
00039 void flipper() {
00040     for (int i = 0; i < FALLING_EDGE_COUNT; i++) {
00041         out = 1;
00042         wait(0.2);
00043         out = 0;
00044         wait(0.2);
00045     }
00046 }
00047 
00048 void in_handler() {
00049     checks++;
00050     myled = !myled;
00051 }
00052 
00053 static bool test_once() {
00054     InterruptIn in(PIN_IN);
00055     checks = 0;
00056     printf("Interrupt table location: 0x%08X\r\n", SCB->VTOR);
00057     in.rise(NULL);
00058     in.fall(in_handler);
00059     flipper();
00060     in.fall(NULL);
00061     bool result = (checks == FALLING_EDGE_COUNT);
00062     printf("Falling edge checks counted: %d ... [%s]\r\n", checks, result ? "OK" : "FAIL");
00063     return result;
00064 }
00065 
00066 int main() {
00067     MBED_HOSTTEST_TIMEOUT(15);
00068     MBED_HOSTTEST_SELECT(default_auto);
00069     MBED_HOSTTEST_DESCRIPTION(Interrupt vector relocation);
00070     MBED_HOSTTEST_START("MBED_A18");
00071 
00072     // First test, no table reallocation
00073     {
00074         printf("Starting first test (interrupts not relocated).\r\n");
00075         bool ret = test_once();
00076         if (ret == false) {
00077             MBED_HOSTTEST_RESULT(false);
00078         }
00079     }
00080 
00081     // Relocate interrupt table and test again
00082     {
00083         printf("Starting second test (interrupts relocated).\r\n");
00084         memcpy(int_table, (void*)SCB->VTOR, sizeof(int_table));
00085         SCB->VTOR = (uint32_t)int_table;
00086 
00087         bool ret = test_once();
00088         if (ret == false) {
00089             MBED_HOSTTEST_RESULT(false);
00090         }
00091     }
00092 
00093     MBED_HOSTTEST_RESULT(true);
00094 }