Part Number: AM3352
Tool/software: TI-RTOS
Hi all,
This issue report by customer.
Below it the steps to enter standby mode:
1,save peripherals context
2,Config CM3
3,enable wake up source
4,disable module clock
5,config minimum OPP
6,disable IRQ
7,Save A8 context
8,waiting for wake up....
9,restore A8 context
10,enable IRQ
11,enabble module clock
If customer use starterware(no bios), it working well.
But if customer use BIOS when do "10, enable IRQ" after wake up, the program will crash.
Here is the IRQ fuction
/*
**
** Wrapper function for the IRQ disable function
**
*/
void CPUirqd(void)
{
/* Disable IRQ in CPSR */
asm(" dsb \n\t"
" mrs r0, CPSR\n\t"
" orr r0, #0x80\n\t"
" msr CPSR, r0");
}
/*
**
** Wrapper function for the IRQ enable function
**
*/
void CPUirqe(void)
{
/* Enable IRQ in CPSR */
asm(" dsb \n\t"
" mrs r0, CPSR\n\t"
" bic r0, #0x80\n\t"
" msr CPSR, r0");
}
Could you please provide some advise? thanks!
BR,
Denny
