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| Original file line number | Diff line number | Diff line change |
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| --[[ | ||
| 1. Air101，Air103 模块上的ADC0脚-PA1, 0~2.4v,不要超过范围使用!!! | ||
| 2. Air101，Air103模块上的ADC1脚-PA4, 0~2.4v,不要超过范围使用!!! | ||
| 3. Air103 模块上的ADC2脚-PA2, 0~2.4v,不要超过范围使用!!! | ||
| 4. Air103 模块上的ADC3脚-PA3, 0~2.4v,不要超过范围使用!!! | ||
| 5. Air101,Air103 adc.CH_CPU 为内部温度 ，adc.CH_VBAT为VBAT | ||
| 6. Air105 adc参考电压是1.88V，所有通道一致， | ||
| 7. Air105内部分压没有隔离措施，在开启内部分压后，量程有所变化，具体看寄存器手册，1~5分压后能测到3.6，6通道能接近5V，但是不能直接测5V，可以测4.2V 0通道是始终开启无法关闭分压。 | ||
| 8. Air780E内部ADC接口为12bits 外部直流分压为0-3.4V | ||
| 9. Air780E内部具有2个ADC接口，ADC0 -- AIO3 ADC1 -- AIO4 | ||
| 10. 特殊通道, CPU内部温度Temp -- adc.CH_CPU 主供电脚电压 VBAT -- adc.CH_VBAT | ||
| 11. 设置分压(adc.setRange)要在adc.open之前设置，否则无效!! | ||
| ]] | ||
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| local testAdc = {} | ||
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| local rtos_bsp = rtos.bsp() | ||
| function adc_pin() -- 根据不同开发板，设置ADC编号 | ||
| if rtos_bsp == "AIR101" then -- Air101开发板ADC编号 | ||
| return 0,1,255,255,adc.CH_CPU ,adc.CH_VBAT | ||
| elseif rtos_bsp == "AIR103" then -- Air103开发板ADC编号 | ||
| return 0,1,2,3,adc.CH_CPU ,adc.CH_VBAT | ||
| elseif rtos_bsp == "AIR105" then -- Air105开发板ADC编号 | ||
| -- 默认不开启分压,范围是0-1.8v精度高 | ||
| -- 设置分压要在adc.open之前设置，否则无效!! | ||
| -- adc.setRange(adc.ADC_RANGE_3_6) | ||
| return 0,5,6,255,255,255 | ||
| elseif rtos_bsp == "ESP32C3" then -- ESP32C3开发板ADC编号 | ||
| return 0,1,2,3,adc.CH_CPU , 255 | ||
| elseif rtos_bsp == "ESP32C2" then -- ESP32C2开发板ADC编号 | ||
| return 0,1,2,3,adc.CH_CPU , 255 | ||
| elseif rtos_bsp == "ESP32S3" then -- ESP32S3开发板ADC编号 | ||
| return 0,1,2,3,adc.CH_CPU , 255 | ||
| elseif rtos_bsp == "EC618" then --Air780E开发板ADC编号 | ||
| -- 默认不开启分压,范围是0-1.2v精度高 | ||
| -- 设置分压要在adc.open之前设置，否则无效!! | ||
| -- adc.setRange(adc.ADC_RANGE_3_8) | ||
| return 0,1,255,255,adc.CH_CPU ,adc.CH_VBAT | ||
| elseif rtos_bsp == "EC718P" then --Air780EP开发板ADC编号 | ||
| -- 默认不开启分压,范围是0-1.6v精度高 | ||
| -- 开启分压后，外部输入最大不可超过3.3V | ||
| -- 设置分压要在adc.open之前设置，否则无效!! | ||
| -- adc.setRange(adc.ADC_RANGE_MAX) | ||
| return 0,1,255,255,adc.CH_CPU ,adc.CH_VBAT | ||
| elseif rtos_bsp == "UIS8850BM" then | ||
| return 0,255,255,255, adc.CH_CPU ,adc.CH_VBAT | ||
| else | ||
| log.info("main", "define ADC pin in main.lua") | ||
| return 255,255,255,255, adc.CH_CPU ,adc.CH_VBAT | ||
| end | ||
| end | ||
| local adc_pin_0,adc_pin_1,adc_pin_2,adc_pin_3,adc_pin_temp,adc_pin_vbat=adc_pin() | ||
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| function testAdc.dotest() | ||
| if rtos_bsp == "AIR105" then | ||
| adc.setRange(adc.ADC_RANGE_3_6) --开启的内部分压，可以把量程扩大 | ||
| end | ||
| if adc_pin_0 and adc_pin_0 ~= 255 then adc.open(adc_pin_0) end | ||
| if adc_pin_1 and adc_pin_1 ~= 255 then adc.open(adc_pin_1) end | ||
| if adc_pin_2 and adc_pin_2 ~= 255 then adc.open(adc_pin_2) end | ||
| if adc_pin_3 and adc_pin_3 ~= 255 then adc.open(adc_pin_3) end | ||
| if adc_pin_temp and adc_pin_temp ~= 255 then adc.open(adc_pin_temp) end | ||
| if adc_pin_vbat and adc_pin_vbat ~= 255 then adc.open(adc_pin_vbat) end | ||
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| if adc_pin_0 and adc_pin_0 ~= 255 and mcu and mcu.ticks then | ||
| sys.wait(1000) | ||
| log.info("开始读取ADC") | ||
| local ms_start = mcu.ticks() | ||
| for i = 1, 100, 1 do | ||
| adc.get(adc_pin_0) | ||
| end | ||
| local ms_end = mcu.ticks() | ||
| log.info("结束读取ADC") | ||
| log.info("adc", "读取耗时", "100次", ms_end - ms_start, "ms", "单次", (ms_end - ms_start) // 100, "ms") | ||
| end | ||
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| -- 下面是循环打印, 接地不打印0也是正常现象 | ||
| -- ADC的精度都不会太高, 若需要高精度ADC, 建议额外添加adc芯片 | ||
| while true do | ||
| if adc_pin_0 and adc_pin_0 ~= 255 then | ||
| log.debug("adc", "adc" .. tostring(adc_pin_0), adc.get(adc_pin_0)) -- 若adc.get报nil, 改成adc.read | ||
| end | ||
| if adc_pin_1 and adc_pin_1 ~= 255 then | ||
| log.debug("adc", "adc" .. tostring(adc_pin_1), adc.get(adc_pin_1)) | ||
| end | ||
| if adc_pin_2 and adc_pin_2 ~= 255 then | ||
| log.debug("adc", "adc" .. tostring(adc_pin_2), adc.get(adc_pin_2)) | ||
| end | ||
| if adc_pin_3 and adc_pin_3 ~= 255 then | ||
| log.debug("adc", "adc" .. tostring(adc_pin_3), adc.get(adc_pin_3)) | ||
| end | ||
| if adc_pin_temp and adc_pin_temp ~= 255 then | ||
| log.debug("adc", "CPU TEMP", adc.get(adc_pin_temp)) | ||
| end | ||
| if adc_pin_vbat and adc_pin_vbat ~= 255 then | ||
| log.debug("adc", "VBAT", adc.get(adc_pin_vbat)) | ||
| end | ||
| sys.wait(1000) | ||
| end | ||
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| -- 若不再读取, 可关掉adc, 降低功耗, 非必须 | ||
| if adc_pin_0 and adc_pin_0 ~= 255 then adc.close(adc_pin_0) end | ||
| if adc_pin_1 and adc_pin_1 ~= 255 then adc.close(adc_pin_1) end | ||
| if adc_pin_2 and adc_pin_2 ~= 255 then adc.close(adc_pin_2) end | ||
| if adc_pin_3 and adc_pin_3 ~= 255 then adc.close(adc_pin_3) end | ||
| if adc_pin_temp and adc_pin_temp ~= 255 then adc.close(adc_pin_temp) end | ||
| if adc_pin_vbat and adc_pin_vbat ~= 255 then adc.close(adc_pin_vbat) end | ||
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| end | ||
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| return testAdc |
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