chain40
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
#include "elite_dac.h"
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#include "edc.h"
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static bool DACReset;
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void VoutGainControl(uint8_t VOUTLevel)
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{
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switch (VOUTLevel)
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{
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case 0:
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// VOUT gain level = 0, using 240K resister
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break;
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case 1:
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// VOUT gain level = 1, using 15K resister
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break;
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case 2:
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// VOUT gain level = 2, using 15K resister
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break;
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default:
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// default using 15K resister
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break;
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}
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}
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int32_t User2Real(uint16_t usr_code)
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{
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/* transfer usr_code to real voltage value (mV) */
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return (int32_t)((usr_code - 25000) / 5);
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}
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void AutoGainChangeVout(uint32_t *p_VoutGainLv, int32_t usr_code)
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{
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int32_t RealVolt = (usr_code - 25000) * 200; // (usr_code - 25000) / 5 * 1000 [1uV]
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// switch to 1 level volt(small) 15K
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// switch to 2 level volt(large) 240K
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if (*p_VoutGainLv == VOUT_GAIN_15K)
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{
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if (RealVolt > DAC_VOUT_GAIN_LARGE_BOUNDARY || RealVolt < -1 * DAC_VOUT_GAIN_LARGE_BOUNDARY)
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{
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// switch to 2 level volt(large)
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*p_VoutGainLv = VOUT_GAIN_240K;
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VoutGainControl(edc.instru.VoutGainLv);
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}
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}
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else if (*p_VoutGainLv == VOUT_GAIN_240K)
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{
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if (RealVolt < DAC_VOUT_GAIN_SMALL_BOUNDARY && RealVolt > -1 * DAC_VOUT_GAIN_SMALL_BOUNDARY)
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{
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// switch to 1 level volt(small)
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*p_VoutGainLv = VOUT_GAIN_15K;
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VoutGainControl(edc.instru.VoutGainLv);
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}
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}
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}
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