Pin Control (Pinctrl)

To configure the pin multiplexing functions, follow the steps below:

Turn off the SWD if the pin default function is SWD, and configure it to other functions.
```
Pinmux_Swdoff();
```

Configure pin multiplexing function.

Pinmux_Config(u8 PinName, u32 PinFunc);

Set pin pull type.

PAD_PullCtrl(u8 PinName, u8 PullType); //normal mode
PAD_SleepPullCtrl(u8 PinName, u8 PullType); //sleep and deep-sleep mode

Set pin driving strength if needed.

PAD_DrvStrength(u8 PinName, u32 DrvStrength);

To configure the pin multiplexing function, follow the steps below:

Turn off the SWD pins if default function is SWD.
```
Pinmux_Swdoff();
```

Configure pin multiplexing function.

Pinmux_Config(u8 PinName, u32 PinFunc);

Set pin pull type.

PAD_PullCtrl(u8 PinName, u8 PullType); //normal mode
PAD_SleepPullCtrl(u8 PinName, u8 PullType); //sleep and deep-sleep mode

Set pin driving strength if needed.

PAD_DrvStrength(u8 PinName, u32 DrvStrength);

Turn off the SWD pins or enable audio share pad pins if default function is SWD or audio.

For SWD pad:
```
Pinmux_Swdoff();
```

For audio share pad (PB11~PB19):

Enable audio codec analog IP active function

RCC_PeriphClockCmd(APBPeriph_AC_AIP, NULL, ENABLE);

Operation for specific pin

switch (PinName) {
case _PB_11:
case _PB_12:
AUDIO_CODEC_SetMicBstChnMute(AMIC1, MICIN, MUTE);
break;
case _PB_13:
case _PB_14:
AUDIO_CODEC_SetMicBstChnMute(AMIC2, MICIN, MUTE);
break;
case _PB_18:
case _PB_19:
AUDIO_CODEC_SetMicBstChnMute(AMIC3, MICIN, MUTE);
break;

Enable digital path input for audio share pad
```
APAD_InputCtrl(PinName, ENABLE);
```

Configure pin multiplexing function.

Pinmux_Config(u8 PinName, u32 PinFunc);

Set pin pull type.

PAD_PullCtrl(u8 PinName, u8 PullType); //normal mode
PAD_SleepPullCtrl(u8 PinName, u8 PullType); //sleep and deepsleep mode

Set pin driving strength if needed.

PAD_DrvStrength(u8 PinName, u32 DrvStrength);

To configure the pin multiplexing function, follow the steps below:

Turn off SWD or enable audio pad share if the pin default function is SWD or audio.

Pinmux_Swdoff();
HAL_WRITE32(PINMUX_REG_BASE, REG_PAD_AUD_PAD_CTRL, 0x1FFFFF);

Configure pin multiplexing function.

Pinmux_Config(u8 PinName, u32 PinFunc);

Set pin pull type.

PAD_PullCtrl(u8 PinName, u8 PullType); //normal mode
PAD_SleepPullCtrl(u8 PinName, u8 PullType); //sleep and deep-sleep mode

Set pin driving strength if needed.

PAD_DrvStrength(u8 PinName, u32 DrvStrength);