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fix a problem where enabling the spurious interrupt handler screwed up

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interrupt controller registers
This commit is contained in:
Markus Fröschle
2015-10-11 05:54:45 +00:00
parent ea0e9c1ec0
commit 5d75d8ccc7
1 changed files with 15 additions and 11 deletions
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10
BaS_gcc/sys/interrupts.c
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@@ -137,9 +137,9 @@ bool isr_register_handler(int vector, int level, int priority, bool (*handler)(v
int index;
int int_source;
if ((vector == 0) || (handler == NULL))
if ((vector <= 0) || (handler == NULL))
{
dbg("illegal vector or handler!\r\n");
dbg("illegal vector or handler (vector=%x, handler=%p)!\r\n", vector, handler);
return false;
}
@@ -163,6 +163,8 @@ bool isr_register_handler(int vector, int level, int priority, bool (*handler)(v
int_source = vector - 64;
if (int_source >= 0)
{
if (!isr_enable_int_source(int_source))
{
dbg("failed to enable internal interrupt souce %d in IMRL/IMRH\r\n", int_source);
@@ -174,7 +176,7 @@ bool isr_register_handler(int vector, int level, int priority, bool (*handler)(v
dbg("failed to set priority and level for interrupt source %d\r\n", int_source);
return false;
}
}
return true;
}
}
@@ -243,6 +245,8 @@ bool pic_interrupt_handler(void *arg1, void *arg2)
{
uint8_t rcv_byte;
dbg("PIC interrupt\r\n");
rcv_byte = MCF_PSC3_PSCRB_8BIT;
if (rcv_byte == 2) /* PIC requests RTC data */
{