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[docs] Improve halconf/mcuconf code examples (#24597)

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Ryan 2024-11-15 05:00:02 +11:00 • committed by GitHub
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88
docs/drivers/audio.md
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@ -57,27 +57,32 @@ This driver needs one Timer per enabled/used DAC channel, to trigger conversion;
Additionally, in the board config, you'll want to make changes to enable the DACs, GPT for Timers 6, 7 and 8:
```c
//halconf.h:
#define HAL_USE_DAC TRUE
#define HAL_USE_GPT TRUE
::: code-group
```c [halconf.h]
#pragma once
#define HAL_USE_DAC TRUE // [!code focus]
#define HAL_USE_GPT TRUE // [!code focus]
#include_next <halconf.h>
```
```c [mcuconf.h]
#pragma once
```c
// mcuconf.h:
#include_next <mcuconf.h>
#undef STM32_DAC_USE_DAC1_CH1
#define STM32_DAC_USE_DAC1_CH1 TRUE
#undef STM32_DAC_USE_DAC1_CH2
#define STM32_DAC_USE_DAC1_CH2 TRUE
#undef STM32_GPT_USE_TIM6
#define STM32_GPT_USE_TIM6 TRUE
#undef STM32_GPT_USE_TIM7
#define STM32_GPT_USE_TIM7 TRUE
#undef STM32_GPT_USE_TIM8
#define STM32_GPT_USE_TIM8 TRUE
#undef STM32_DAC_USE_DAC1_CH1 // [!code focus]
#define STM32_DAC_USE_DAC1_CH1 TRUE // [!code focus]
#undef STM32_DAC_USE_DAC1_CH2 // [!code focus]
#define STM32_DAC_USE_DAC1_CH2 TRUE // [!code focus]
#undef STM32_GPT_USE_TIM6 // [!code focus]
#define STM32_GPT_USE_TIM6 TRUE // [!code focus]
#undef STM32_GPT_USE_TIM7 // [!code focus]
#define STM32_GPT_USE_TIM7 TRUE // [!code focus]
#undef STM32_GPT_USE_TIM8 // [!code focus]
#define STM32_GPT_USE_TIM8 TRUE // [!code focus]
```
:::
::: tip
Note: DAC1 (A4) uses TIM6, DAC2 (A5) uses TIM7, and the audio state timer uses TIM8 (configurable).
@ -95,23 +100,28 @@ only needs one timer (GPTD6, Tim6) to trigger the DAC unit to do a conversion; t
Additionally, in the board config, you'll want to make changes to enable the DACs, GPT for Timer 6:
```c
//halconf.h:
#define HAL_USE_DAC TRUE
#define HAL_USE_GPT TRUE
::: code-group
```c [halconf.h]
#pragma once
#define HAL_USE_DAC TRUE // [!code focus]
#define HAL_USE_GPT TRUE // [!code focus]
#include_next <halconf.h>
```
```c [mcuconf.h]
#pragma once
```c
// mcuconf.h:
#include_next <mcuconf.h>
#undef STM32_DAC_USE_DAC1_CH1
#define STM32_DAC_USE_DAC1_CH1 TRUE
#undef STM32_DAC_USE_DAC1_CH2
#define STM32_DAC_USE_DAC1_CH2 TRUE
#undef STM32_GPT_USE_TIM6
#define STM32_GPT_USE_TIM6 TRUE
#undef STM32_DAC_USE_DAC1_CH1 // [!code focus]
#define STM32_DAC_USE_DAC1_CH1 TRUE // [!code focus]
#undef STM32_DAC_USE_DAC1_CH2 // [!code focus]
#define STM32_DAC_USE_DAC1_CH2 TRUE // [!code focus]
#undef STM32_GPT_USE_TIM6 // [!code focus]
#define STM32_GPT_USE_TIM6 TRUE // [!code focus]
```
:::
### DAC Config
@ -170,19 +180,25 @@ This driver uses the ChibiOS-PWM system to produce a square-wave on specific out
The hardware directly toggles the pin via its alternate function. See your MCU's data-sheet for which pin can be driven by what timer - looking for TIMx_CHy and the corresponding alternate function.
A configuration example for the STM32F103C8 would be:
```c
//halconf.h:
#define HAL_USE_PWM TRUE
#define HAL_USE_PAL TRUE
::: code-group
```c [halconf.h]
#pragma once
#define HAL_USE_PWM TRUE // [!code focus]
#define HAL_USE_PAL TRUE // [!code focus]
#include_next <halconf.h>
```
```c [mcuconf.h]
#pragma once
```c
// mcuconf.h:
#include_next <mcuconf.h>
#undef STM32_PWM_USE_TIM1
#define STM32_PWM_USE_TIM1 TRUE
#undef STM32_PWM_USE_TIM1 // [!code focus]
#define STM32_PWM_USE_TIM1 TRUE // [!code focus]
```
:::
If we now target pin A8, looking through the data-sheet of the STM32F103C8, for the timers and alternate functions
- TIM1_CH1 = PA8 <- alternate0