305 lines
7.7 KiB
C
305 lines
7.7 KiB
C
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#include "Includes.h"
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#if 1
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//#define printf(...) (0)
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typedef struct
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{
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uint32_t AO_TIMER_VALUE:16;
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uint32_t AO_TIMER_CLR:1;
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uint32_t AO_TIMER_EN:1;
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uint32_t FREQ_TIMER_EN:1;
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uint32_t RESERVED:13;
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}AO_TIMER_CTL_T;
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static AO_TIMER_CTL_T* ao_timer_ctl = (AO_TIMER_CTL_T*)AO_TIMER_CTL;
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/*
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3fff 3044 --50K
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2fff 4132 --39K
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1fff 5229 --31K
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0fff 6326 --25K
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*/
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#define MAX_LPO_RTM 0x3fff
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#define MIN_LPO_RTM 0x0
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#define MID_LPO_RTM 0x1fff
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#define RANGE_LPO_RTM 0x400
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#define GEARS_HZ 1.56
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#define _32K_STAND_HZ 32000
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#define CALIB_STEP_CYCLE_32K 32 //#define CALIB_STEP_CYCLE_32K 10
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#define COUNT_16M 16000 //#define COUNT_16M 5000
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static void LPO_RTM_SET(uint16_t val)
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{
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*((volatile unsigned *)0x40002084)=0x1fff4000|val; //*((volatile unsigned *)0x40002084)=0x1fff4000|0x22C0; //printf("LPO_RTM:%08x\n",*((volatile unsigned *)0x40002084));
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}
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/**
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* Copyright (c) 2022 - 2025, XinChip
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*
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* All rights reserved.
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*
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* Author :
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*
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*/
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static uint8_t calib_step(uint32_t _cycle_32k,uint32_t *FREQ_VAL)
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{
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uint32_t tsd;
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ao_timer_ctl->AO_TIMER_VALUE = _cycle_32k;//32 cycle == 1ms
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ao_timer_ctl->AO_TIMER_EN = 0;
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ao_timer_ctl->AO_TIMER_CLR = 0; //中断使用在timer 使能之前
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ao_timer_ctl->FREQ_TIMER_EN = 1;
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do{
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__read_hw_reg32(AO_ALL_INTR, tsd);
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}while((tsd&0x20)==0);
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__read_hw_reg32(FREQ_TIMER_VAL, *FREQ_VAL);//
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ao_timer_ctl->AO_TIMER_CLR = 1; // rtc 必须清理中断
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ao_timer_ctl->FREQ_TIMER_EN = 0;
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if(*FREQ_VAL==COUNT_16M) return 0;
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return ((*FREQ_VAL<COUNT_16M)? 1:2);
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}
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/**
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* Copyright (c) 2022 - 2025, XinChip
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*
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* All rights reserved.
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*
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* Describe : init calib clk
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*
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*/
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static volatile uint32_t mid=MID_LPO_RTM;
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void calib_init(void)
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{
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//config clk
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__write_hw_reg32(CPR_CTLAPBCLKEN_GRCTL, 0x00020002);
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__write_hw_reg32(CPR_AOCLKEN_GRCTL,0x00020002);
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LPO_RTM_SET(mid);
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}
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/**
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* Copyright (c) 2022 - 2025, XinChip
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*
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* All rights reserved.
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*
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* Describe : "linear regression" calibration
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*
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*/
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void rc32k_calib(uint16_t cts)
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{
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uint32_t tsd,frac;
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while(cts--)
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{
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__disable_irq();
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calib_step(CALIB_STEP_CYCLE_32K,&tsd);
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__enable_irq();
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printf("FREQ_TIMER_VAL:%d\n",tsd);
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frac=(uint32_t)((((float)((16.0)*CALIB_STEP_CYCLE_32K))/tsd)*1000000);
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if(frac > _32K_STAND_HZ)
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{
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mid=mid-((uint32_t)(((float)(frac-_32K_STAND_HZ))/GEARS_HZ));
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}
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else if(frac < _32K_STAND_HZ)
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{
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mid=mid+((uint32_t)(((float)(_32K_STAND_HZ-frac))/GEARS_HZ));
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}
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LPO_RTM_SET(mid);
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}
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printf("@@LPO_RTM_SET:0x%08x\n",mid);
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}
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#else
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//////////////////////////校准三次 每次校准用的时间如下//////////////////////////
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//低电压下
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//*((volatile unsigned *)(0x40002400 + 0x20)) =0x44;
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//*((volatile unsigned *)(0x40002400 + 0x48)) =0x01;
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//@@LPO_RTM_SET:0x00002704 32 //1ms校准一次
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//@@LPO_RTM_SET:0x00002709 32*5 //5ms校准一次
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//@@LPO_RTM_SET:0x0000270b 320*2 //20ms校准一次
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//@@LPO_RTM_SET:0x00002708 320*4 //40ms校准一次
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//@@LPO_RTM_SET:0x00002706 320*6 //60ms校准一次
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//@@LPO_RTM_SET:0x0000270a 320*8 //80ms校准一次
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//@@LPO_RTM_SET:0x00002706 3200 //100ms校准一次
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//@@LPO_RTM_SET:0x00002705 3200*2 //200ms校准一次
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//@@LPO_RTM_SET:0x00002708 3200*3 //300ms校准一次
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//@@LPO_RTM_SET:0x00002705 3200*4 //400ms校准一次
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//@@LPO_RTM_SET:0x00002705 3200*5 //400ms校准一次
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//@@LPO_RTM_SET:0x0000270a 3200*6 //600ms校准一次
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//@@LPO_RTM_SET:0x00002708 3200*7 //700ms校准一次
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//@@LPO_RTM_SET:0x00002708 3200*8 //800ms校准一次
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//@@LPO_RTM_SET:0x00002707 3200*9 //900ms校准一次
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//正常电压下：
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//@@LPO_RTM_SET:0x000026db 32 //1ms校准一次
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//@@LPO_RTM_SET:0x000026da 32*5 //5ms校准一次
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//@@LPO_RTM_SET:0x000026dc 320*2 //20ms校准一次
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//@@LPO_RTM_SET:0x000026da 320*4 //40ms校准一次
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//@@LPO_RTM_SET:0x000026e0 320*6 //60ms校准一次
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//@@LPO_RTM_SET:0x000026dc 320*8 //80ms校准一次
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//@@LPO_RTM_SET:0x000026dc 3200 //100ms校准一次
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//@@LPO_RTM_SET:0x000026dc 3200*2 //200ms校准一次
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//@@LPO_RTM_SET:0x000026df 3200*3 //300ms校准一次
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//@@LPO_RTM_SET:0x000026dd 3200*4 //400ms校准一次
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//@@LPO_RTM_SET:0x000026db 3200*5 //400ms校准一次
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//@@LPO_RTM_SET:0x000026db 3200*6 //600ms校准一次
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//@@LPO_RTM_SET:0x000026de 3200*7 //700ms校准一次
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//@@LPO_RTM_SET:0x000026dd 3200*8 //800ms校准一次
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//@@LPO_RTM_SET:0x000026e0 3200*9 //900ms校准一次
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//#define printf(...) (0)
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typedef struct
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{
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uint32_t AO_TIMER_VALUE:16;
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uint32_t AO_TIMER_CLR:1;
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uint32_t AO_TIMER_EN:1;
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uint32_t FREQ_TIMER_EN:1;
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uint32_t RESERVED:13;
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}AO_TIMER_CTL_T;
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static AO_TIMER_CTL_T* ao_timer_ctl = (AO_TIMER_CTL_T*)AO_TIMER_CTL;
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/*
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3fff 3044 --50K
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2fff 4132 --39K
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1fff 5229 --31K
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0fff 6326 --25K
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*/
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#define MAX_LPO_RTM 0x3fff
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#define MIN_LPO_RTM 0x0
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#define MID_LPO_RTM 0x1fff
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#define RANGE_LPO_RTM 0x400
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#define GEARS_HZ 1.56
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#define _32K_STAND_HZ 32000
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//#define CALIB_STEP_CYCLE_32K 32 //#define CALIB_STEP_CYCLE_32K 10
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//#define COUNT_16M 16000 //#define COUNT_16M 5000
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#define TMP_VAL 1
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#define CALIB_STEP_CYCLE_32K 32*TMP_VAL //#define CALIB_STEP_CYCLE_32K 10
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#define COUNT_16M 16000*TMP_VAL //#define COUNT_16M 5000
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static void LPO_RTM_SET(uint16_t val)
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{
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*((volatile unsigned *)0x40002084)=0x1fff4000|val; //*((volatile unsigned *)0x40002084)=0x1fff4000|0x22C0; //printf("LPO_RTM:%08x\n",*((volatile unsigned *)0x40002084));
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}
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/**
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* Copyright (c) 2022 - 2025, XinChip
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*
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* All rights reserved.
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*
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* Author :
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*
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*/
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static uint8_t calib_step(uint32_t _cycle_32k,uint32_t *FREQ_VAL)
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{
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uint32_t tsd;
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ao_timer_ctl->AO_TIMER_VALUE = _cycle_32k;//32 cycle == 1ms
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ao_timer_ctl->AO_TIMER_EN = 0;
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ao_timer_ctl->AO_TIMER_CLR = 0; //中断使用在timer 使能之前
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ao_timer_ctl->FREQ_TIMER_EN = 1;
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do{
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__read_hw_reg32(AO_ALL_INTR, tsd);
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//if(*FREQ_TIMER_VAL>=16777210) printf("***********\n");
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}while((tsd&0x20)==0);
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__read_hw_reg32(FREQ_TIMER_VAL, *FREQ_VAL);//
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ao_timer_ctl->AO_TIMER_CLR = 1; // rtc 必须清理中断
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ao_timer_ctl->FREQ_TIMER_EN = 0;
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if(*FREQ_VAL==COUNT_16M) return 0;
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return ((*FREQ_VAL<COUNT_16M)? 1:2);
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}
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/**
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* Copyright (c) 2022 - 2025, XinChip
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*
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* All rights reserved.
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*
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* Describe : init calib clk
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*
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*/
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static volatile uint32_t mid=MID_LPO_RTM;
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void calib_init(void)
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{
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//config clk
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__write_hw_reg32(CPR_CTLAPBCLKEN_GRCTL, 0x00020002);
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__write_hw_reg32(CPR_AOCLKEN_GRCTL,0x00020002);
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LPO_RTM_SET(mid);
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}
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/**
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* Copyright (c) 2022 - 2025, XinChip
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*
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* All rights reserved.
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*
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* Describe : "linear regression" calibration
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*
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*/
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void rc32k_calib(uint16_t cts)
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{
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uint32_t tsd,frac;
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while(cts--)
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{
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__disable_irq();
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calib_step(CALIB_STEP_CYCLE_32K,&tsd);
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__enable_irq();
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printf("FREQ_TIMER_VAL:%d\n",tsd);
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frac=(uint32_t)((((float)((16.0)*CALIB_STEP_CYCLE_32K))/tsd)*1000000);
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if(frac > _32K_STAND_HZ)
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{
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mid=mid-((uint32_t)(((float)(frac-_32K_STAND_HZ))/GEARS_HZ));
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}
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else if(frac < _32K_STAND_HZ)
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{
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mid=mid+((uint32_t)(((float)(_32K_STAND_HZ-frac))/GEARS_HZ));
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}
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LPO_RTM_SET(mid);
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}
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printf("@@LPO_RTM_SET:0x%08x\n",mid);
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}
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#endif
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#if 0
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void test_main(void)
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{
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printf("TEST CALIB\n");
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Init_gpio();
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// *((volatile unsigned *)(0x40002400 + 0x20)) =0x44;
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// *((volatile unsigned *)(0x40002400 + 0x48)) =0x01;
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gpio_output_high(26);
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gpio_output_low(26);
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//3.19ms
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calib_init();
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rc32k_calib(3);
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gpio_output_high(26);
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gpio_output_low(26);
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xc_ao_timer_calib_test();
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}
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#endif
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//cmp
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