kopia lustrzana https://github.com/martin-ger/esp_mqtt
76 wiersze
2.2 KiB
C
76 wiersze
2.2 KiB
C
#include "ets_sys.h"
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#include "osapi.h"
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#include "adc.h"
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#define i2c_bbpll 0x67
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#define i2c_bbpll_en_audio_clock_out 4
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#define i2c_bbpll_en_audio_clock_out_msb 7
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#define i2c_bbpll_en_audio_clock_out_lsb 7
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#define i2c_bbpll_hostid 4
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#define i2c_saradc 0x6C
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#define i2c_saradc_hostid 2
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#define i2c_saradc_en_test 0
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#define i2c_saradc_en_test_msb 5
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#define i2c_saradc_en_test_lsb 5
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#define i2c_writeReg_Mask(block, host_id, reg_add, Msb, Lsb, indata) \
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rom_i2c_writeReg_Mask(block, host_id, reg_add, Msb, Lsb, indata)
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#define i2c_readReg_Mask(block, host_id, reg_add, Msb, Lsb) \
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rom_i2c_readReg_Mask_(block, host_id, reg_add, Msb, Lsb)
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#define i2c_writeReg_Mask_def(block, reg_add, indata) \
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i2c_writeReg_Mask(block, block##_hostid, reg_add, reg_add##_msb, reg_add##_lsb, indata)
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#define i2c_readReg_Mask_def(block, reg_add) \
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i2c_readReg_Mask(block, block##_hostid, reg_add, reg_add##_msb, reg_add##_lsb)
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#ifdef ADC_DEBUG
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#define ADC_DBG os_printf
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#else
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#define ADC_DBG
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#endif
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uint16 ICACHE_FLASH_ATTR adc_read(void)
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{
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uint8 i;
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uint16 sar_dout, tout, sardata[8];
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i2c_writeReg_Mask_def(i2c_saradc, i2c_saradc_en_test, 1); //select test mux
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//PWDET_CAL_EN=0, PKDET_CAL_EN=0
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SET_PERI_REG_MASK(0x60000D5C, 0x200000);
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while (GET_PERI_REG_BITS(0x60000D50, 26, 24) > 0); //wait r_state == 0
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sar_dout = 0;
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CLEAR_PERI_REG_MASK(0x60000D50, 0x02); //force_en=0
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SET_PERI_REG_MASK(0x60000D50, 0x02); //force_en=1
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os_delay_us(2);
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while (GET_PERI_REG_BITS(0x60000D50, 26, 24) > 0); //wait r_state == 0
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read_sar_dout(sardata);
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for (i = 0; i < 8; i++) {
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sar_dout += sardata[i];
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ADC_DBG("%d, ", sardata[i]);
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}
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tout = (sar_dout + 8) >> 4; //tout is 10 bits fraction
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i2c_writeReg_Mask_def(i2c_saradc, i2c_saradc_en_test, 1); //select test mux
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while (GET_PERI_REG_BITS(0x60000D50, 26, 24) > 0); //wait r_state == 0
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CLEAR_PERI_REG_MASK(0x60000D5C, 0x200000);
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SET_PERI_REG_MASK(0x60000D60, 0x1); //force_en=1
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CLEAR_PERI_REG_MASK(0x60000D60, 0x1); //force_en=1
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return tout; //tout is 10 bits fraction
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}
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