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tmr imts works. I'm not thrilled with how the interrupts and modes are

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set... but I'm not sure what to do about it. The big problem is that I
have to be in user mode to service irqs, but I can't enable and
disable F and I in usermode. All I can do is an swi and then have
handler which lets me enable or disable them (like a mini-syscall).
This commit is contained in:
Mariano Alvira 2009-04-22 14:55:40 -04:00
parent 10fdafbcb2
commit bdbf279d0f
6 changed files with 98 additions and 54 deletions
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22
tests/tmr-ints.c
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@ -47,7 +47,7 @@
#define reg16(x) (*(volatile uint16_t *)(x))
#include "embedded_types.h"
#include "sys-interrupt.h"
//#include "sys-interrupt.h"
#include "isr.h"
@ -76,9 +76,22 @@ void tmr_isr(void) {
}
/* void enIRQ(void) { */
/* asm volatile ( */
/* ".code 32;" */
/* "msr cpsr_c,#0x10;" */
/* ".code 16;" */
/* ); */
/* } */
__attribute__ ((section ("startup")))
void main(void) {
// *(volatile uint32_t *)0x80020010 = 0x20;
// *(volatile uint32_t *)0x80020034 = 0xffff; //force an int.
/* pin direction */
led_init();
@ -94,8 +107,8 @@ void main(void) {
#define OUT_MODE 0 /* OFLAG is asserted while counter is active */
reg16(TMR_ENBL) = 0; /* tmrs reset to enabled */
reg16(TMR0_SCTRL) = 0;
reg16(TMR0_CSCTRL) =0x0040;
reg16(TMR0_SCTRL) = 0;
reg16(TMR0_CSCTRL) =0x0040;
reg16(TMR0_LOAD) = 0; /* reload to zero */
reg16(TMR0_COMP_UP) = 18750; /* trigger a reload at the end */
reg16(TMR0_CMPLD1) = 18750; /* compare 1 triggered reload level, 10HZ maybe? */
@ -106,7 +119,8 @@ void main(void) {
led_on();
enable_tmr_irq();
enableIRQ();
// enIRQ();
while(1) {
/* sit here and let the interrupts do the work */