96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
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#include "sys_config.h"
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#include "tx_platform.h"
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#ifdef TXW80X
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#include "txw80x/ticker.h"
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#endif
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#ifdef TXW81X
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#include "txw83x/ticker.h"
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#endif
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#include "osal/irq.h"
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#include "list.h"
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#include "dev.h"
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#if 0
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#define SIMPLE_TIMER0(offset) (*((uint32 *)(0x40015B00 + offset)))
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/**
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* @brief The tick timer is initialized.
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* @param None
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* @retval None
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* @note Use the lowest priority interrupt.
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*/
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void hw_timer_init(void)
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{
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//STMR0_CTL
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SIMPLE_TIMER0(0x00) = (4 << 8) | (7 << 0);
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//STMR0_CNT
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SIMPLE_TIMER0(0x04) = 0;
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//STMR0_PR
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SIMPLE_TIMER0(0x04) = 0xFFFFFFFF;
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}
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/**
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* @brief get the tick of the timer.
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* @param None
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* @retval None
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*/
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uint32 hw_timer_get_tick(uint8 start)
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{
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uint32 cnt = 0;
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uint32_t v = sys_get_sysclk()/1000000;
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if(start){
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__disable_irq();
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//STMR0_CNT
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SIMPLE_TIMER0(0x04) = 0;
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//TMR_EN
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SIMPLE_TIMER0(0x00) |= (1 << 4);
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//*(uint32_t *)(HG_GPIOC_BASE+36) |= BIT(7);
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__enable_irq();
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return 0;
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}else{
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__disable_irq();
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//*(uint32_t *)(HG_GPIOC_BASE+36) &= ~ BIT(7);
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//TMR_CNT
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cnt = SIMPLE_TIMER0(0x04);
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//TMR_EN
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SIMPLE_TIMER0(0x00) &= ~(1 << 4);
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__enable_irq();
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return (16*cnt)/v;
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}
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}
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#endif
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/**
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* @brief Use the CPU precision delay function
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* @param n :
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* @retval None
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* @note for CK803 : period_count = 3*n+1
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*/
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__attribute__((noinline, naked)) void __delay_asm(uint32 n)
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{
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__asm__(" \
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delay_asm_L1: \
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DECGT32 R0, R0, 1 \n\
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BT32 delay_asm_L1 \n\
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rts \n\
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");
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}
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/**
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* @brief Use the CPU to delay approximately us
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* @param n : the number of us to delay
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* @retval None
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* @note only work for SYS_CLK
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*/
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void delay_us(uint32 n)
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{
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uint32 temp = sys_get_sysclk()/1000000*n;
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if(temp > 47) {
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__delay_asm((temp - 47)/3);
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}
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}
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