diff options
Diffstat (limited to 'software')
| -rw-r--r-- | software/clic_vectored/clic_vectored.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/software/clic_vectored/clic_vectored.c b/software/clic_vectored/clic_vectored.c index a20b1f2..cbc104e 100644 --- a/software/clic_vectored/clic_vectored.c +++ b/software/clic_vectored/clic_vectored.c @@ -98,6 +98,21 @@ void button_2_setup(void) { clic_enable_interrupt(&clic, (LOCALINTIDBASE + LOCAL_INT_BTN_2)); } +/*Entry Point for Machine Software Interrupt Handler*/ +uint32_t COUNT; +void msi_isr()__attribute((interrupt)); +void msi_isr() { + //clear the SW interrupt + CLINT_REG(CLINT_MSIP) = 0; + COUNT++; +} + +void msi_setup(void) { + clic_install_handler(&clic, MSIPID, msi_isr); + clic_set_intcfg(&clic, MSIPID, 1<<4); + clic_enable_interrupt(&clic, MSIPID); +} + void config_gpio() { // Configure LEDs as outputs. GPIO_REG(GPIO_INPUT_EN) &= ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ; @@ -127,13 +142,18 @@ int main(int argc, char **argv) button_0_setup(); button_1_setup(); button_2_setup(); + msi_setup(); // Enable all global interrupts set_csr(mstatus, MSTATUS_MIE); - - print_instructions(); - while(1); + + while(1) { + wait_ms(10000); + printf("Count=%d\n", COUNT); + //Trigger a SW interrupt + CLINT_REG(CLINT_MSIP) = 1; + } return 0; |