AC63_BT_SDK/cpu/br25/adc_api.c

#include "typedef.h"
#include "asm/clock.h"
#include "asm/adc_api.h"
#include "timer.h"
#include "init.h"
#include "asm/efuse.h"
#include "irq.h"
#include "asm/power/p33.h"
#include "asm/power_interface.h"
#include "jiffies.h"

static volatile u16 _adc_res;
static volatile u16 cur_ch_value;
static u8 cur_ch = 0;
struct adc_info_t {
    u32 ch;
    u16 value;
    u32 jiffies;
    u32 sample_period;
};

void set_change_vbg_value_flag(void);

#define     ENABLE_OCCUPY_MODE 1

static struct adc_info_t adc_queue[ADC_MAX_CH + ENABLE_OCCUPY_MODE];

static u16 vbg_adc_value;
static u16 vbat_adc_value;

static u8 vbat_vddio_tieup = 0;

#define     ADC_SRC_CLK clk_get("adc")

/*config adc clk according to sys_clk*/
static const u32 sys2adc_clk_info[] = {
    128000000L,
    96000000L,
    72000000L,
    48000000L,
    24000000L,
    12000000L,
    6000000L,
    1000000L,
};

extern const int config_bt_temperature_pll_trim;
static void temperature_pll_trim_init(void);
static void temperature_pll_trim_exit(void);

u32 adc_add_sample_ch(u32 ch)
{
    u32 i = 0;
    for (i = 0; i < ADC_MAX_CH; i++) {
        /* printf("%s() %d %x %x\n", __func__, i, ch, adc_queue[i].ch); */
        if (adc_queue[i].ch == ch) {
            break;
        } else if (adc_queue[i].ch == -1) {
            adc_queue[i].ch = ch;
            adc_queue[i].value = 1;
            adc_queue[i].jiffies = 0;
            adc_queue[i].sample_period = msecs_to_jiffies(0);
            printf("add sample ch %x\n", ch);
            break;
        }
    }
    return i;
}

u32 adc_set_sample_freq(u32 ch, u32 ms)
{
    u32 i;
    for (i = 0; i < ADC_MAX_CH; i++) {
        if (adc_queue[i].ch == ch) {
            adc_queue[i].sample_period = msecs_to_jiffies(ms);
            adc_queue[i].jiffies = msecs_to_jiffies(ms) + jiffies;
            break;
        }
    }
    return i;
}

u32 adc_remove_sample_ch(u32 ch)
{
    u32 i = 0;
    for (i = 0; i < ADC_MAX_CH; i++) {
        if (adc_queue[i].ch == ch) {
            adc_queue[i].ch = -1;
            break;
        }
    }
    return i;
}
static u32 adc_get_next_ch(u32 cur_ch)
{
    for (int i = cur_ch + 1; i < ADC_MAX_CH; i++) {
        if (adc_queue[i].ch != -1) {
            return i;
        }
    }
    return 0;
}

void adc_set_vbat_vddio_tieup(u8 en)
{
    vbat_vddio_tieup = !!en;
}

u32 adc_get_value(u32 ch)
{
    if (vbat_vddio_tieup) {
        if (ch == AD_CH_VBAT) {
            return vbat_adc_value;
        }
    } else {
        if (ch == AD_CH_LDOREF) {
            return vbg_adc_value;
        }
    }

    for (int i = 0; i < ADC_MAX_CH; i++) {
        if (adc_queue[i].ch == ch) {
            return adc_queue[i].value;
        }
    }
    return 0;
}

u32 adc_value_to_voltage(u32 adc_vbg, u32 adc_ch_val)
{
#define     CENTER 1168

    u32 adc_res = adc_ch_val;
    u32 adc_trim = get_vbg_trim();
    u32 tmp, tmp1;

    tmp1 = adc_trim & 0x1f;
    tmp = (adc_trim & BIT(5)) ? CENTER - tmp1 * 3.2 : CENTER + tmp1 * 3.2;
    adc_res = adc_res * tmp / adc_vbg;
    return adc_res;
}

u32 adc_get_voltage(u32 ch)
{
#ifdef CONFIG_FPGA_ENABLE
    return 1000;
#endif
    u32 adc_vbg = adc_get_value(AD_CH_LDOREF);
    u32 adc_res = adc_get_value(ch);
    return adc_value_to_voltage(adc_vbg, adc_res);
}

static u8 check_vbat_cnt = 0;
static u8 check_vbat_flag = 0;
u32 adc_check_vbat_lowpower()
{
    if (!vbat_vddio_tieup) {
        u32 vbat = adc_get_value(AD_CH_VBAT);
        //printf("vbat_adc = %d vbg = %d\n", vbat, vbg_adc_value);
        if ((!check_vbat_flag) && (__builtin_abs(vbat - 255) < 15)) {
            //printf("&1\n");
            set_change_vbg_value_flag();
            check_vbat_flag = 1;
        }
        if (check_vbat_flag) {
            check_vbat_cnt ++;
            if (check_vbat_cnt > 18) {
                //printf("&2\n");
                check_vbat_flag = 0;
                check_vbat_cnt = 0;
            }
        }
    }
    return 0;
}

void adc_audio_ch_select(u32 ch)
{
    SFR(JL_ANA->DAA_CON0, 0, 5, ch);
}
void adc_pll_detect_en(u32 ch)
{
    JL_CLOCK->PLL_CON1 |= BIT(18);//pll
    SFR(JL_CLOCK->PLL_CON1, 16, 2, ch);
}
void adc_fm_detect_en(u32 ch)
{
    JL_ANA->WLA_CON25 |= (BIT(19));//fm
    SFR(JL_ANA->WLA_CON25, 21, 3, ch);
}
void adc_bt_detect_en(u32 ch)
{
    JL_ANA->WLA_CON4 |= (BIT(6));//bt
}

void adc_close()
{
    JL_ADC->CON = 0;
    JL_ADC->CON = 0;
}
void adc_suspend()
{
    JL_ADC->CON &= ~BIT(4);
}
void adc_resume()
{
    JL_ADC->CON |= BIT(4);
}

void adc_enter_occupy_mode(u32 ch)
{
    if (JL_ADC->CON & BIT(4)) {
        return;
    }
    adc_queue[ADC_MAX_CH].ch = ch;
    cur_ch_value = adc_sample(ch);
}
void adc_exit_occupy_mode()
{
    adc_queue[ADC_MAX_CH].ch = -1;
}
u32 adc_occupy_run()
{
    if (adc_queue[ADC_MAX_CH].ch != -1) {
        while (1) {
            asm volatile("nop");
            if (_adc_res != (u16) - 1) {
                break;
            }
        }
        if (_adc_res == 0) {
            _adc_res ++;
        }
        adc_queue[ADC_MAX_CH].value = _adc_res;
        _adc_res = cur_ch_value;
        return adc_queue[ADC_MAX_CH].value;
    }
    return 0;
}
u32 adc_get_occupy_value()
{
    if (adc_queue[ADC_MAX_CH].ch != -1) {
        return adc_queue[ADC_MAX_CH].value;
    }
    return 0;
}
u32 get_adc_div(u32 src_clk)
{
    u32 adc_clk;
    u32 adc_clk_idx;
    u32 cnt;
    adc_clk = src_clk;
    cnt = ARRAY_SIZE(sys2adc_clk_info);
    for (adc_clk_idx = 0; adc_clk_idx < cnt; adc_clk_idx ++) {
        if (adc_clk > sys2adc_clk_info[adc_clk_idx]) {
            break;
        }
    }

    if (adc_clk_idx < cnt) {
        adc_clk_idx = cnt - adc_clk_idx;
    } else {
        adc_clk_idx = cnt - 1;
    }
    return adc_clk_idx;
}

static void adc_ch_mux_select(u32 mux_ch)
{
#if 1
    //先把所有复用通道都关了
    P33_CON_SET(P3_ANA_CON4, 0, 1, 0);//pmu
    SFR(JL_ANA->DAA_CON0, 0, 5, 0);//audio
    JL_CLOCK->PLL_CON1 &= ~BIT(18);//pll
    /* JL_ANA->WLA_CON25 &= ~(BIT(19));//fm */
    /* JL_ANA->WLA_CON4 &= ~(BIT(6));//bt */
#endif

    if ((mux_ch & 0xfffff) == AD_OF_PMU) {
        adc_pmu_detect_en(mux_ch >> 20);
    } else if ((mux_ch & 0xfffff) == AD_OF_AUDIO) {
        adc_audio_ch_select(mux_ch >> 20);
    } else if ((mux_ch & 0xfffff) == AD_OF_PLL) {
        adc_pll_detect_en(mux_ch >> 20);
    } else if ((mux_ch & 0xfffff) == AD_OF_FM) {
        adc_fm_detect_en(mux_ch >> 20);
    } else if ((mux_ch & 0xfffff) == AD_OF_BT) {
        adc_bt_detect_en(mux_ch >> 20);
    }
}

u8 __attribute__((weak)) adc_io_reuse_enter(u32 ch)
{
    return 0;
}

u8 __attribute__((weak)) adc_io_reuse_exit(u32 ch)
{
    return 0;
}

___interrupt
static void adc_isr()
{
    u32 ch;
    ch = (JL_ADC->CON & 0xf00) >> 8;

    adc_io_reuse_exit(ch);

    _adc_res = JL_ADC->RES;

    adc_pmu_detect_en(AD_CH_WVDD >> 20);
    local_irq_disable();
    JL_ADC->CON = BIT(6);
    JL_ADC->CON = 0;

    local_irq_enable();
}

u32 adc_sample(u32 ch)
{
    const u32 tmp_adc_res = _adc_res;
    _adc_res = (u16) - 1;

    if (adc_io_reuse_enter(ch)) {
        _adc_res = adc_get_value(ch);
        return tmp_adc_res;
    }

    u32 adc_con = 0;
    SFR(adc_con, 0, 3, 0b110);//div 96

    adc_con |= (0xf << 12); //启动延时控制，实际启动延时为此数值*8个ADC时钟
    adc_con |= (adc_queue[0].ch & 0xf) << 8;
    adc_con |= BIT(3);
    adc_con |= BIT(6);
    adc_con |= BIT(5);//ie

    SFR(adc_con, 8, 4, ch & 0xf);

    if ((ch & 0xffff) == AD_CH_MUX) {
        adc_ch_mux_select(ch);
    }

    JL_ADC->CON = adc_con;
    JL_ADC->CON |= BIT(4);//en

    JL_ADC->CON |= BIT(6);//kistart

    return tmp_adc_res;
}

static u8 change_vbg_flag = 0;
void set_change_vbg_value_flag(void)
{
    change_vbg_flag = 1;
}
void adc_scan(void *priv)
{
    static u16 adc_sample_flag = 0;

    if (adc_queue[ADC_MAX_CH].ch != -1) {//occupy mode
        return;
    }

    if (JL_ADC->CON & BIT(4)) {
        return ;
    }

    if (adc_sample_flag) {
        if (adc_sample_flag == 2) {
            vbg_adc_value = _adc_res;
        } else {
            adc_queue[cur_ch].value = _adc_res;
            if (adc_queue[cur_ch].ch == AD_CH_LDOREF) {
                vbg_adc_value = _adc_res;
            }
        }
        adc_sample_flag = 0;
    }

    if (change_vbg_flag) {
        change_vbg_flag = 0;
        adc_sample(AD_CH_LDOREF);
        adc_sample_flag = 2;
        return;
    }

    u8 next_ch = adc_get_next_ch(cur_ch);

    if (adc_queue[next_ch].sample_period) {
        if (time_before(adc_queue[next_ch].jiffies, jiffies)) {
            adc_sample(adc_queue[next_ch].ch);
            adc_sample_flag = 1;
            adc_queue[next_ch].jiffies += adc_queue[next_ch].sample_period;
        }
    } else {
        adc_sample(adc_queue[next_ch].ch);
        adc_sample_flag = 1;
    }

    cur_ch = next_ch;
}

//获取当前采集ad的通道总数
u8 get_cur_total_ad_ch(void)
{
    u8 total_ch = 0;
    u8 i = 0;
    while (i < ADC_MAX_CH) {
        if (adc_queue[i].ch != -1) {
            total_ch++;
        }
        i++;
    }
    return total_ch;
}

void _adc_init(u32 sys_lvd_en)
{
    memset(adc_queue, 0xff, sizeof(adc_queue));

    JL_ADC->CON = 0;
    JL_ADC->CON = 0;

    adc_pmu_detect_en(1);

    u32 i;
    vbat_adc_value = 0;
    adc_sample(AD_CH_VBAT);
    for (i = 0; i < 10; i++) {
        while (!(JL_ADC->CON & BIT(7)));
        vbat_adc_value += JL_ADC->RES;
        JL_ADC->CON |= BIT(6);
    }
    vbat_adc_value /= 10;
    printf("vbat_adc_value = %d\n", vbat_adc_value);

    vbg_adc_value = 0;
    adc_sample(AD_CH_LDOREF);
    for (i = 0; i < 10; i++) {
        while (!(JL_ADC->CON & BIT(7)));
        vbg_adc_value += JL_ADC->RES;
        JL_ADC->CON |= BIT(6);
    }
    vbg_adc_value /= 10;
    printf("vbg_adc_value = %d\n", vbg_adc_value);

    u32 vbat_queue_ch = 0;
    u32 vbg_queue_ch = 0;
    if (vbat_vddio_tieup) {
        vbg_queue_ch = adc_add_sample_ch(AD_CH_LDOREF);
        adc_set_sample_freq(AD_CH_LDOREF, 30000);
        adc_queue[vbg_queue_ch].value = vbg_adc_value;
    } else {
        vbat_queue_ch = adc_add_sample_ch(AD_CH_VBAT);
        adc_set_sample_freq(AD_CH_VBAT, 30000);
        adc_queue[vbat_queue_ch].value = vbat_adc_value;
    }

    if (config_bt_temperature_pll_trim) {
        u32 dtemp_ch = adc_add_sample_ch(AD_CH_DTEMP);
        adc_set_sample_freq(AD_CH_DTEMP, 1500);
        adc_sample(AD_CH_DTEMP);
        while (!(JL_ADC->CON & BIT(7)));
        adc_queue[dtemp_ch].value = JL_ADC->RES;
        JL_ADC->CON |= BIT(6);
        temperature_pll_trim_init();
    }

    request_irq(IRQ_SARADC_IDX, 0, adc_isr, 0);

    sys_s_hi_timer_add(NULL, adc_scan, 2); //2ms

    /* void adc_test();                              */
    /* sys_s_hi_timer_add(NULL, adc_test, 1000); //2ms */
    /*  */
    /* extern void wdt_close(); */
    /* wdt_close(); */
    /*  */
    /* while(1); */
}
static u8 wvdd_lev = 0;
static u32 get_wvdd_voltage()
{
    u32 vbg_value = 0;
    u32 wvdd_value = 0;

    adc_pmu_detect_en(1);
    adc_sample(AD_CH_LDOREF);
    for (int i = 0; i < 10; i++) {
        while (!(JL_ADC->CON & BIT(7))) { //wait pending
        }

        vbg_value += JL_ADC->RES;
        JL_ADC->CON |= BIT(6);
    }

    adc_sample(AD_CH_WVDD);
    for (int i = 0; i < 10; i++) {
        while (!(JL_ADC->CON & BIT(7))) { //wait pending

        }

        wvdd_value += JL_ADC->RES;
        JL_ADC->CON |= BIT(6);
    }

    u32 adc_vbg = vbg_value / 10;
    u32 adc_res = wvdd_value / 10;

    return adc_value_to_voltage(adc_vbg, adc_res);
}


static void wvdd_trim()
{
    wvdd_lev = 0;
    P33_CON_SET(P3_WLDO06_AUTO, 0, 3, wvdd_lev);
    WLDO06_EN(1);
    delay(2000);//1ms
    do {
        P33_CON_SET(P3_WLDO06_AUTO, 0, 3, wvdd_lev);
        delay(2000);//1ms * n
        if (get_wvdd_voltage() > 700) {
            break;
        }
        wvdd_lev ++;
    } while (wvdd_lev < 8);
    WLDO06_EN(0);

    printf("wvdd_lev: %d\n", wvdd_lev);

    power_set_wvdd(wvdd_lev);
}

//*********************************************************************************
//蓝牙温度跟随trim
//*********************************************************************************
#define CHECK_TEMPERATURE_CYCLE             (2000)   //检测周期
#define BTOSC_TEMPERATURE_THRESHOLD         (10 * 3) //偏差阈值
#define AD_SAMPLE_COUNTS                    1
#define WIPE_EXTREMUM_EN                    1
#define ABS(x)                              (x > 0 ? x : (-x))

#if WIPE_EXTREMUM_EN && (AD_SAMPLE_COUNTS == 2)
#error "AD_SAMPLE_COUNTS must >= 3 while WIPE_EXTREMUM_EN=1"
#endif
#if (AD_SAMPLE_COUNTS < 1)
#error "AD_SAMPLE_COUNTS must > 0"
#endif

static u32 pll_trim_timer = 0;
static u32 prev_mV = 0;

extern void bta_pll_config_init(s32 offset);

static u32 get_cur_temperature(void)
{
    if (!config_bt_temperature_pll_trim) {
        return 0;
    }

    u32 cur_mV;
    u32 sum_mV = 0;

#if WIPE_EXTREMUM_EN
    u32 max = 0;
    u32 min = (u32) - 1;
#endif /* WIPE_EXTREMUM_EN */

    for (int i = 0; i < AD_SAMPLE_COUNTS; i++) {

#if 0
        /* adc_enter_occupy_mode(AD_CH_DTEMP); */
        /* cur_mV = adc_occupy_run(); */
        /* adc_exit_occupy_mode(); */
#else
        cur_mV = adc_get_voltage(AD_CH_DTEMP);
#endif
        printf("cur_mV=%d\r\n", cur_mV);
        sum_mV += cur_mV;
#if WIPE_EXTREMUM_EN
        max = (cur_mV > max) ? cur_mV : max;
        min = (cur_mV < min) ? cur_mV : min;
#endif /* WIPE_EXTREMUM_EN */
    }

#if WIPE_EXTREMUM_EN
    printf("sum_mV=%d, max=%d, min=%d", sum_mV, max, min);
    return ((sum_mV - max - min) / (AD_SAMPLE_COUNTS - 2));
#else
    return sum_mV / AD_SAMPLE_COUNTS;
#endif /* WIPE_EXTREMUM_EN */
}

u8 get_bt_rf_state(void);
void get_bta_pll_midbank_temp(void);
static void pll_trim_timer_handler(void)
{
    if (!config_bt_temperature_pll_trim) {
        return;
    }

    /* printf("\n--func=%s", __FUNCTION__); */

    u32 cur_mV;
    s32 minus;
    static s32 pll_bank_offset = 0;

    cur_mV = adc_get_voltage(AD_CH_DTEMP);

    minus = (s32)(cur_mV - prev_mV);

    printf("cur_mV =%d, prev_mV =%d,minus =%d\n", cur_mV, prev_mV, minus);

    if (ABS(minus) >= BTOSC_TEMPERATURE_THRESHOLD) {

        prev_mV = cur_mV;

        (minus > 0) ? pll_bank_offset ++ : pll_bank_offset --;

        printf("pll_bank_offset =%d\n\n", pll_bank_offset);

        /* bta_pll_config_init(pll_bank_offset); */
        get_bta_pll_midbank_temp();
    }
}

static void temperature_pll_trim_init(void)
{
    prev_mV = adc_get_voltage(AD_CH_DTEMP);
    printf("init prev_mV:%d\n", prev_mV);
    pll_trim_timer = sys_timer_add(NULL, pll_trim_timer_handler, CHECK_TEMPERATURE_CYCLE);
}

static void temperature_pll_trim_exit(void)
{
    if (pll_trim_timer) {
        sys_timeout_del(pll_trim_timer);
        pll_trim_timer = 0;
    }
}

//*********************************************************************************


u8 vddiom_trim_level;
void vddiom_trim()
{
    u32 vbg_value = 0;

    adc_pmu_detect_en(1);

    adc_sample(AD_CH_LDOREF);
    for (int i = 0; i < 10; i++) {
        while (!(JL_ADC->CON & BIT(7))) { //wait pending
        }
        vbg_value += JL_ADC->RES;
        JL_ADC->CON |= BIT(6);
    }

    vbg_value /= 10;

    u32 vddio_vol = adc_value_to_voltage(vbg_value, 1023);
    //  printf("vddio_vol %d (mv), vbg_value %d\n", vddio_vol, vbg_value);


    u32 vddiom_lev = GET_VDDIOM_VOL();
    u32 vddiom_ref = (vddiom_lev - VDDIOM_VOL_22V) * 200 + 2200;
    int vddiom_diff = (vddio_vol - vddiom_ref);
    if (__builtin_abs(vddiom_diff) > 100) {
        if (vddio_vol > vddiom_ref) {
            vddiom_trim_level = vddiom_lev - 1;
        } else {
            vddiom_trim_level = vddiom_lev + 1;
        }
        VDDIOM_VOL_SEL(vddiom_trim_level);
        delay(5000);
    } else {
        vddiom_trim_level = vddiom_lev;
    }

    printf("trim: vddio_vol %d (mv), vddiom_lev %d, vddiom_diff %d, vbg_value %d\n", vddio_vol, vddiom_trim_level, vddiom_diff, vbg_value);

    u32 temp = (vddiom_trim_level - VDDIOM_VOL_22V) * 200 + 2200;
    u32 vddiow_lev_bak = GET_VDDIOW_VOL();
    u32 vddiow_ref = 0;
    VDDIOW_VOL_SEL(VDDIOW_VOL_21V);
    switch (vddiow_lev_bak) {
    case VDDIOW_VOL_21V:
        vddiow_ref = 2100;
        break;
    case VDDIOW_VOL_24V:
        vddiow_ref = 2400;
        break;
    case VDDIOW_VOL_28V:
        vddiow_ref = 2800;
        break;
    case VDDIOW_VOL_32V:
        vddiow_ref = 3200;
        break;
    }
    if (temp < vddiow_ref + 200) {  //vddiom需要比vddiow高200mV
        if (temp >= 3200 + 200) {
            VDDIOW_VOL_SEL(VDDIOW_VOL_32V);
        } else if (temp >= 2800 + 200) {
            VDDIOW_VOL_SEL(VDDIOW_VOL_28V);
        } else if (temp >= 2400 + 200) {
            VDDIOW_VOL_SEL(VDDIOW_VOL_24V);
        } else {
            VDDIOW_VOL_SEL(VDDIOW_VOL_21V);
        }
        //  printf("trim: vddiow lev %d to %d\n", vddiow_lev_bak, GET_VDDIOW_VOL());
    } else {
        VDDIOW_VOL_SEL(vddiow_lev_bak);
    }
}

void adc_init()
{
    JL_ANA->WLA_CON25 &= ~(BIT(19)); //fm
    JL_ANA->WLA_CON4 &= ~(BIT(6));//bt

    //audio
    JL_ANA->DAA_CON0 &= ~BIT(4);//DACVDD_TEST_EN_11v
    JL_ANA->DAA_CON0 &= ~BIT(3);//CTADCREF_TEST_EN_11v
    JL_ANA->DAA_CON0 &= ~BIT(2);//MICLDO_TEST_EN_11v
    JL_ANA->DAA_CON0 &= ~BIT(1);//VOUTR_TEST_EN_11v
    JL_ANA->DAA_CON0 &= ~BIT(0);//VOUTL_TEST_EN_11v

    JL_CLOCK->PLL_CON1 &= ~BIT(18); //pll

    //每次开机消耗5~8ms，
    vddiom_trim();

    //trim wvdd
    wvdd_trim();

    /* check_pmu_voltage(vbat_vddio_tieup); */

    _adc_init(1);

}
//late_initcall(adc_init);
void adc_test()
{

    /* printf("\n\n%s() chip_id :%x\n", __func__, get_chip_id()); */
    /* printf("%s() vbg trim:%x\n", __func__, get_vbg_trim());    */
    /* printf("%s() vbat trim:%x\n", __func__, get_vbat_trim());  */

    /* printf("\n\nWLA_CON0 %x\n", JL_ANA->WLA_CON0); */
    /* printf("WLA_CON9 %x\n", JL_ANA->WLA_CON9); */
    /* printf("WLA_CON10 %x\n", JL_ANA->WLA_CON10); */
    /* printf("WLA_CON21 %x\n", JL_ANA->WLA_CON21); */
    /*  */
    /* printf("ADA_CON %x\n", JL_ANA->ADA_CON3); */
    /* printf("PLL_CON1 %x\n", JL_CLOCK->PLL_CON1); */

    printf("\n%s() VBAT:%d %d mv\n\n", __func__,
           adc_get_value(AD_CH_VBAT), adc_get_voltage(AD_CH_VBAT) * 4);

    printf("\n%s() DTEMP:%d %d mv\n\n", __func__,
           adc_get_value(AD_CH_DTEMP), adc_get_voltage(AD_CH_DTEMP));
}
void adc_vbg_init()
{
    return ;
}
//__initcall(adc_vbg_init);