microchip-application-pec930-pec930_peripheral

// in main.c
#define CONFIG_TARGET_1_ADC_CHANNEL         ADC_Channel_03
#define CONFIG_TARGET_ADC_MULTI_CHANNELS    (ADC_Channel_02 | ADC_Channel_03 | ADC_Channel_09)

User pull low of the specific key to trigger ADC work

// in main.c
#define CONFIG_GPIO_INPUT_PORTx         GPIOA
#define CONFIG_GPIO_INPUT_PINx          GPIO_Pin_02

Single conversion mode

Software trigger ADC to sample a channel once

The target ADC channel is defined at CONFIG_TARGET_1_ADC_CHANNEL

Configure to single conversion mode

// in main.c
#define CONFIG_TARGET_ADC_MODE_SIGNAL           1
#define CONFIG_TARGET_ADC_MODE_CONTINOUS        0
#define CONFIG_TARGET_ADC_MODE_SCAN             0
#define CONFIG_TARGET_ADC_MODE_DISCONTINOUS     0

Operation flow
- Step 1. Connect the AIN-Channel (CONFIG_TARGET_1_ADC_CHANNEL) with an external device (e.g. power support) which provide difference voltage
- Step 2. Set a specific voltage to external device (e.g. power support)
- Step 3. Press button to trigger ADC start
- Step 4. Get the ADC conversion value from log message
- Step 5. Calculate the measured voltage
```
the measured voltage = ADC_Value * ((AVDD - AVSS) / 4095)
```
- Step 6. repeat Step 2 ~ Step 5

Continuous mode

In this mode, ADC will always sequentially sample the specific channels after a trigger-event

Configure to continuous mode

// in main.c
#define CONFIG_TARGET_ADC_MODE_SIGNAL           0
#define CONFIG_TARGET_ADC_MODE_CONTINOUS        1
#define CONFIG_TARGET_ADC_MODE_SCAN             0
#define CONFIG_TARGET_ADC_MODE_DISCONTINOUS     0

Operation flow
- Step 1. Connect the AIN-Channel (CONFIG_TARGET_1_ADC_CHANNEL) with an external device (e.g. power support) which provide difference voltage
- Step 2. Set a specific voltage to the external device (e.g. power support)
- Step 3. Press button to trigger ADC start
- Step 4. Run-time change voltage from the external device (e.g. power support)
- Step 5. Get the ADC conversion value from log message
  It will auto-log CONFIG_REPEAT_TIMES times with a trigger-event
```
// at main.c
#define CONFIG_REPEAT_TIMES             10
```

Scan mode

In Scan mode, ACD will sequentially sample the specific channels once after a trigger-event

Configure to Scan mode

// in main.c
#define CONFIG_TARGET_ADC_MODE_SIGNAL           0
#define CONFIG_TARGET_ADC_MODE_CONTINOUS        0
#define CONFIG_TARGET_ADC_MODE_SCAN             1
#define CONFIG_TARGET_ADC_MODE_DISCONTINOUS     0

Operation flow
- Step 1. Connect the AIN-Channels (CONFIG_TARGET_ADC_MULTI_CHANNELS) with an external device (e.g. power support) which provide difference voltages
- Step 2. Set specific voltages to the external device (e.g. power support) with multi-channels
- Step 3. Press button to trigger ADC start
- Step 4. Run-time change voltages of multi-channels of the external device (e.g. power support)
- Step 5. Get the ADC conversion values from log message
  It will auto-trigger the sample-event CONFIG_REPEAT_TIMES times
```
// at main.c
#define CONFIG_REPEAT_TIMES             10
```

Discontinuous mode

It will group the selected AIN-Channels and sequentially trigger a sub-group of the selected AIN-Channels with a trigger-event

An example as below

Selected AIN 4,5,7,9
Sub-Group 1: AIN 4, 5, 7
Sub-Group 2: AIN 9
the 1st trigger-evern => Execute Sub-Group 1
the 2nd trigger-evern => Execute Sub-Group 2

Configure to Discontinuous mode

// in main.c
#define CONFIG_TARGET_ADC_MODE_SIGNAL           0
#define CONFIG_TARGET_ADC_MODE_CONTINOUS        0
#define CONFIG_TARGET_ADC_MODE_SCAN             0
#define CONFIG_TARGET_ADC_MODE_DISCONTINOUS     1

Operation flow
- Step 1. Connect the AIN-Channels (CONFIG_TARGET_ADC_MULTI_CHANNELS) with an external device (e.g. power support) which provide difference voltages
- Step 2. Set specific voltages to the external device (e.g. power support) with multi-channels
- Step 3. Press button to trigger ADC start
- Step 4. Run-time change voltages of multi-channels of the external device (e.g. power support)
- Step 5. Get the ADC conversion values from log message

Log

Use serial port with baudrate 115200, 8bit, no parity check.

Single conversion mode

Oct  2 2025 16:19:41
ADC run Single conversion mode
   Button = PA2
wait key event (voltage level low)...
ADC Single Conversion
Trigger ADC
  ch-03 ADC Value: 3395, voltage: 2.735898

...

Continuous mode

Oct  2 2025 15:02:37
ADC run Continuous conversion mode
   Button = PA2
wait key event (voltage level low)...
ADC Continuous mode

Trigger ADC                                 <--- trigger ADC
=> Change External Voltage
  ch-09 ADC Value: 2327, voltage: 1.875238
  ch-03 ADC Value: 3274, voltage: 2.638388
  ch-02 ADC Value: 1342, voltage: 1.081465
=> Change External Voltage
  ch-09 ADC Value: 2331, voltage: 1.878461
  ch-03 ADC Value: 3276, voltage: 2.640000
  ch-02 ADC Value: 1349, voltage: 1.087106
=> Change External Voltage
  ch-09 ADC Value: 2341, voltage: 1.886520
  ch-03 ADC Value: 3152, voltage: 2.540073  <--- change AIN3 voltage
  ch-02 ADC Value: 1352, voltage: 1.089524
=> Change External Voltage
  ch-09 ADC Value: 2336, voltage: 1.882491
  ch-03 ADC Value: 3159, voltage: 2.545714
  ch-02 ADC Value: 1351, voltage: 1.088718
=> Change External Voltage
  ch-09 ADC Value: 2333, voltage: 1.880073
  ch-03 ADC Value: 3028, voltage: 2.440146
  ch-02 ADC Value: 1341, voltage: 1.080659
=> Change External Voltage
  ch-09 ADC Value: 2336, voltage: 1.882491
  ch-03 ADC Value: 2906, voltage: 2.341831  <--- change AIN3 voltage
  ch-02 ADC Value: 1343, voltage: 1.082271
=> Change External Voltage
  ch-09 ADC Value: 2345, voltage: 1.889744
  ch-03 ADC Value: 2902, voltage: 2.338608
  ch-02 ADC Value: 1347, voltage: 1.085495
=> Change External Voltage
  ch-09 ADC Value: 2332, voltage: 1.879267
  ch-03 ADC Value: 2904, voltage: 2.340220
  ch-02 ADC Value: 1717, voltage: 1.383663  <--- change AIN2 voltage
=> Change External Voltage
  ch-09 ADC Value: 2338, voltage: 1.884103
  ch-03 ADC Value: 2902, voltage: 2.338608
  ch-02 ADC Value: 2090, voltage: 1.684249
=> Change External Voltage
  ch-09 ADC Value: 2340, voltage: 1.885714
  ch-03 ADC Value: 2910, voltage: 2.345055
  ch-02 ADC Value: 2575, voltage: 2.075092  <--- change AIN2 voltage
=> Change External Voltage
  ch-09 ADC Value: 2328, voltage: 1.876044
  ch-03 ADC Value: 2905, voltage: 2.341026
  ch-02 ADC Value: 2585, voltage: 2.083150
=> Change External Voltage
  ch-09 ADC Value: 2082, voltage: 1.677802  <--- change AIN9 voltage
  ch-03 ADC Value: 2907, voltage: 2.342637
  ch-02 ADC Value: 2582, voltage: 2.080733
=> Change External Voltage
  ch-09 ADC Value: 1956, voltage: 1.576264
  ch-03 ADC Value: 2905, voltage: 2.341026
  ch-02 ADC Value: 2582, voltage: 2.080733
=> Change External Voltage
  ch-09 ADC Value: 2457, voltage: 1.980000
  ch-03 ADC Value: 2905, voltage: 2.341026
  ch-02 ADC Value: 2583, voltage: 2.081538
=> Change External Voltage
  ch-09 ADC Value: 2833, voltage: 2.283004  <--- change AIN9 voltage
  ch-03 ADC Value: 2904, voltage: 2.340220
  ch-02 ADC Value: 2589, voltage: 2.086374
...

Scan mode

Oct  2 2025 15:44:15
ADC run Scan conversion mode
   Button = PA2
wait key event (voltage level low)...
ADC Scan mode

=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 2215, voltage: 1.784982
  ch-03 ADC Value: 2902, voltage: 2.338608
  ch-02 ADC Value: 2581, voltage: 2.079927
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 2214, voltage: 1.784176
  ch-03 ADC Value: 2903, voltage: 2.339414
  ch-02 ADC Value: 2578, voltage: 2.077509
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 2081, voltage: 1.676996
  ch-03 ADC Value: 2902, voltage: 2.338608
  ch-02 ADC Value: 2587, voltage: 2.084762
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1961, voltage: 1.580293  <--- change AIN9 voltage
  ch-03 ADC Value: 2906, voltage: 2.341831
  ch-02 ADC Value: 2581, voltage: 2.079927
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 1843, voltage: 1.485201
  ch-03 ADC Value: 2907, voltage: 2.342637
  ch-02 ADC Value: 2573, voltage: 2.073480
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1843, voltage: 1.485201  <--- change AIN9 voltage
  ch-03 ADC Value: 2901, voltage: 2.337802
  ch-02 ADC Value: 2586, voltage: 2.083956
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1848, voltage: 1.489231
  ch-03 ADC Value: 2901, voltage: 2.337802
  ch-02 ADC Value: 2830, voltage: 2.280586  <--- change AIN2 voltage
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 1852, voltage: 1.492454
  ch-03 ADC Value: 2906, voltage: 2.341831
  ch-02 ADC Value: 2697, voltage: 2.173407
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1847, voltage: 1.488425
  ch-03 ADC Value: 2902, voltage: 2.338608
  ch-02 ADC Value: 2453, voltage: 1.976776  <--- change AIN2 voltage
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1846, voltage: 1.487619
  ch-03 ADC Value: 2903, voltage: 2.339414
  ch-02 ADC Value: 2344, voltage: 1.888938  <--- change AIN2 voltage
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1851, voltage: 1.491648
  ch-03 ADC Value: 2905, voltage: 2.341026
  ch-02 ADC Value: 2459, voltage: 1.981612  <--- change AIN2 voltage
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 1854, voltage: 1.494066
  ch-03 ADC Value: 2893, voltage: 2.331355
  ch-02 ADC Value: 2466, voltage: 1.987253
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1848, voltage: 1.489231
  ch-03 ADC Value: 3148, voltage: 2.536850  <--- change AIN3 voltage
  ch-02 ADC Value: 2464, voltage: 1.985641
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 1849, voltage: 1.490037
  ch-03 ADC Value: 2782, voltage: 2.241905
  ch-02 ADC Value: 2460, voltage: 1.982418
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1850, voltage: 1.490842
  ch-03 ADC Value: 2413, voltage: 1.944542  <--- change AIN3 voltage
  ch-02 ADC Value: 2458, voltage: 1.980806
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 1848, voltage: 1.489231
  ch-03 ADC Value: 2412, voltage: 1.943736
  ch-02 ADC Value: 2458, voltage: 1.980806
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1850, voltage: 1.490842
  ch-03 ADC Value: 2679, voltage: 2.158901  <--- change AIN3 voltage
  ch-02 ADC Value: 2466, voltage: 1.987253
=> Change External Voltage
Trigger ADC
  ch-09 ADC Value: 1850, voltage: 1.490842
  ch-03 ADC Value: 3023, voltage: 2.436117
  ch-02 ADC Value: 2460, voltage: 1.982418
=> Change External Voltage
Trigger ADC                                 <--- trigger ADC
  ch-09 ADC Value: 1854, voltage: 1.494066
  ch-03 ADC Value: 3397, voltage: 2.737509  <--- change AIN3 voltage
  ch-02 ADC Value: 2464, voltage: 1.985641

...

Discontinuous mode

Sub-Group 1: AIN 2
Sub-Group 2: AIN 3
Sub-Group 3: AIN 9

Oct  2 2025 16:13:42
ADC run Discontinuous conversion mode
   Button = PA2
wait key event (voltage level low)...
ADC Discontinuous mode
=> Change External Voltage

  ## trigger 00-th
  Trigger ADC                       <--- trigger ADC Sub-Group 1 (AIN 2)
  ch-09 ADC Value: 0, voltage: 0.000000
  ch-03 ADC Value: 0, voltage: 0.000000
  ch-02 ADC Value: 2453, voltage: 1.976776

  ## trigger 01-th
  Trigger ADC                       <--- trigger ADC Sub-Group 2 (AIN 3)
  ch-09 ADC Value: 0, voltage: 0.000000
  ch-03 ADC Value: 3399, voltage: 2.739121
  ch-02 ADC Value: 2453, voltage: 1.976776

  ## trigger 02-th
  Trigger ADC                       <--- trigger ADC Sub-Group 3 (AIN 9)
  ch-09 ADC Value: 1843, voltage: 1.485201
  ch-03 ADC Value: 3399, voltage: 2.739121
  ch-02 ADC Value: 2453, voltage: 1.976776

...