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V1.0.5

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刘可亮
2024-06-04 19:00:30 +08:00
parent 990c72f5be
commit 0a13af6a1d
1668 changed files with 342810 additions and 37726 deletions
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36
bsp/artinchip/hal/adcim/hal_adcim.c
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@@ -37,6 +37,7 @@
#define ADCIM_CAL_ADC_STANDARD_VAL 0x800
#define AIC_ADC_MAX_VAL 0xFFF
#define AIC_VOLTAGE_ACCURACY 10000
#define ADCIM_CALCSR_NUM 6
#ifdef AIC_CHIP_D12X
#define ADCIM_CAL_ADC_OFFSET_MISMATCH 0x8
@@ -119,18 +120,43 @@ int hal_adcim_calibration_set(unsigned int val)
return 0;
}
/*
* The calibration value is taken six times and the average value is obtained
* after removing the maximum and minimum values, in order to ensure the
* stability of calibration
*/
u32 hal_adcim_auto_calibration(void)
{
u32 flag = 1;
u32 data = 0;
int max = 0;
int min = 0;
u32 cal_array[ADCIM_CALCSR_NUM];
adcim_writel(0x08002f03, ADCIM_CALCSR);//auto cal
do {
flag = adcim_readl(ADCIM_CALCSR) & 0x00000001;
} while (flag);
for (int i = 0; i < ADCIM_CALCSR_NUM; i++) {
adcim_writel(0x08002f03, ADCIM_CALCSR);//auto cal
do {
flag = adcim_readl(ADCIM_CALCSR) & 0x00000001;
} while (flag);
data = (adcim_readl(ADCIM_CALCSR) >> 16) & 0xfff;
cal_array[i] = (adcim_readl(ADCIM_CALCSR) >> 16) & 0xfff;
if (cal_array[i] > max)
max = cal_array[i];
if (i == 0) {
min = cal_array[0];
} else if (cal_array[i] < min) {
min = cal_array[i];
}
data += cal_array[i];
pr_debug("[%d]cal_data %d\n", i, cal_array[i]);
}
data = (data - min - max) / (ADCIM_CALCSR_NUM - 2);
pr_debug("max %d min %d, latest_data %d\n", max, min, data);
return data;
}