adc-dac-baremetal

Name: adc-dac-baremetal
Author: mohitmishra786

141stars19forks

How to install adc-dac-baremetal?

mohitmishra786/low-level-dev-skills/adc-dac-baremetal

$npx -y skills add mohitmishra786/low-level-dev-skills --skill adc-dac-baremetal

Installs into the current project.

Summary

Bare-metal ADC and DAC skill. Use when configuring analog sampling, DMA-driven ADC, calibration, or DAC output on MCUs. Activates on queries about ADC bare-metal, sampling time, DMA ADC, or DAC channel setup.

Files · 1

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SKILL.md

1	# ADC and DAC (Bare-Metal)
2
3	## Purpose
4
5	Configure ADC and DAC peripherals: channel selection, sampling times, calibration sequences, DMA circular buffers, and DAC static/dynamic output.
6
7	## When to Use
8
9	- Reading analog sensors (temperature, voltage)
10	- Audio or control voltage output via DAC
11	- Continuous sampling with DMA
12	- Post-reset ADC calibration on STM32
13
14	## Workflow
15
16	### 1. STM32 ADC single conversion
17
18	```c
19	/* Enable ADC1 and GPIOA clock; PA0 analog mode */
20	ADC1->CR2 \|= ADC_CR2_ADON;
21	for (volatile int i = 0; i < 10000; i++); /* stabilization — RM value */
22
23	ADC1->SMPR2 \|= ADC_SMPR2_SMP0_2; /* 84 cycles sample time ch0 */
24	ADC1->SQR3 = 0; /* channel 0, 1 conversion */
25	ADC1->CR2 \|= ADC_CR2_SWSTART;
26
27	while (!(ADC1->SR & ADC_SR_EOC))
28	;
29	uint16_t sample = ADC1->DR;
30	```
31
32	Run `ADC_Calibration()` / `ADC_CR2_RSTCAL/CAL` per RM on F1/F4 families.
33
34	### 2. DMA circular ADC
35
36	```c
37	/* ADC1 → DMA2 Stream0, circular mode into buffer[64] */
38	/* Configure DMA: periph-to-mem, halfword, increment mem, circular */
39	ADC1->CR2 \|= ADC_CR2_DMA \| ADC_CR2_CONT;
40	DMA2_Stream0->CR \|= DMA_SxCR_EN;
41	```
42
43	Half-transfer / transfer-complete IRQs for double buffering.
44
45	### 3. DAC output (STM32)
46
47	```c
48	RCC->APB1ENR \|= RCC_APB1ENR_DACEN;
49	DAC->CR \|= DAC_CR_EN1;
50	DAC->DHR12R1 = 2048; /* mid-scale 3.3V reference */
51	```
52
53	### 4. Agent usage
54
55	```
56	/adc-dac-baremetal Set up ADC1 channel 0 with DMA circular buffer
57	```
58
59	## Common Problems
60
61	\| Symptom \| Cause \| Fix \|
62	\|---------\|-------\|-----\|
63	\| Noisy readings \| Short sample time \| Increase SMP bits \|
64	\| Stuck EOC \| Clock not enabled \| RCC ADC enable \|
65	\| Wrong voltage \| Vref not 3.3V \| Measure VDDA; calibrate \|
66	\| DMA corrupt \| Buffer alignment \| Use `uint16_t` aligned buffer \|
67
68	## Related Skills
69
70	- `skills/baremetal/dma-baremetal` — ADC DMA streams
71	- `skills/baremetal/timers-pwm-baremetal` — ADC external trigger
72	- `skills/baremetal/gpio-baremetal` — analog pin mode

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adc-dac-baremetal

141stars19forks

View on GitHub

How to install adc-dac-baremetal?

mohitmishra786/low-level-dev-skills/adc-dac-baremetal

$npx -y skills add mohitmishra786/low-level-dev-skills --skill adc-dac-baremetal

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# ADC and DAC (Bare-Metal)
2
3	## Purpose
4
5	Configure ADC and DAC peripherals: channel selection, sampling times, calibration sequences, DMA circular buffers, and DAC static/dynamic output.
6
7	## When to Use
8
9	- Reading analog sensors (temperature, voltage)
10	- Audio or control voltage output via DAC
11	- Continuous sampling with DMA
12	- Post-reset ADC calibration on STM32
13
14	## Workflow
15
16	### 1. STM32 ADC single conversion
17
18	```c
19	/* Enable ADC1 and GPIOA clock; PA0 analog mode */
20	ADC1->CR2 \|= ADC_CR2_ADON;
21	for (volatile int i = 0; i < 10000; i++); /* stabilization — RM value */
22
23	ADC1->SMPR2 \|= ADC_SMPR2_SMP0_2; /* 84 cycles sample time ch0 */
24	ADC1->SQR3 = 0; /* channel 0, 1 conversion */
25	ADC1->CR2 \|= ADC_CR2_SWSTART;
26
27	while (!(ADC1->SR & ADC_SR_EOC))
28	;
29	uint16_t sample = ADC1->DR;
30	```
31
32	Run `ADC_Calibration()` / `ADC_CR2_RSTCAL/CAL` per RM on F1/F4 families.
33
34	### 2. DMA circular ADC
35
36	```c
37	/* ADC1 → DMA2 Stream0, circular mode into buffer[64] */
38	/* Configure DMA: periph-to-mem, halfword, increment mem, circular */
39	ADC1->CR2 \|= ADC_CR2_DMA \| ADC_CR2_CONT;
40	DMA2_Stream0->CR \|= DMA_SxCR_EN;
41	```
42
43	Half-transfer / transfer-complete IRQs for double buffering.
44
45	### 3. DAC output (STM32)
46
47	```c
48	RCC->APB1ENR \|= RCC_APB1ENR_DACEN;
49	DAC->CR \|= DAC_CR_EN1;
50	DAC->DHR12R1 = 2048; /* mid-scale 3.3V reference */
51	```
52
53	### 4. Agent usage
54
55	```
56	/adc-dac-baremetal Set up ADC1 channel 0 with DMA circular buffer
57	```
58
59	## Common Problems
60
61	\| Symptom \| Cause \| Fix \|
62	\|---------\|-------\|-----\|
63	\| Noisy readings \| Short sample time \| Increase SMP bits \|
64	\| Stuck EOC \| Clock not enabled \| RCC ADC enable \|
65	\| Wrong voltage \| Vref not 3.3V \| Measure VDDA; calibrate \|
66	\| DMA corrupt \| Buffer alignment \| Use `uint16_t` aligned buffer \|
67
68	## Related Skills
69
70	- `skills/baremetal/dma-baremetal` — ADC DMA streams
71	- `skills/baremetal/timers-pwm-baremetal` — ADC external trigger
72	- `skills/baremetal/gpio-baremetal` — analog pin mode

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6 picks

Type