Standrad SDK pmap_func

bingsong.li · July 31, 2023, 8:50am

Hi,

How could we to init the pin direction in pinmap_init() ?
does pin direction be related with low power ?

dakamaster · August 2, 2023, 3:44am

Welcome to AmebaIoT Forum.

Based on your previous issue, I am assuming that you are using open-source AmebaD SDK.

There is a comment section above of the pinmap_init() indicating you need to set up the Pull Up or Pull Down direction in pmap_func :

github.com

ambiot/ambd_sdk/blob/be744260b9230cf01eafcc741d0bd4504cf8c59e/component/soc/realtek/amebad/fwlib/ram_lp/rtl8721dlp_pinmap.c#L43


      
          

          	return FALSE;

          }

          

          /**

            *  @brief Config all pins to the right function and pull state based on pmap_func table.

            *  @note should set pmap_func. Function & FuncPuPd corectly based on your board.

            *  @retval None       

            */

          CONFIG_FW_CRITICAL_CODE_SECTION

          void pinmap_init(void)

          {

          	int i = 0;

          	u32 dslp_wakeup = SOCPS_DsleepWakeStatusGet();

          

          	for (;;) {

          		/*  Check if search to end */

          		if (pmap_func[i].PinName == _PNC) {

          			break;

          		}

Where the pin mapping function for PMC(Power Management Control) is located here

github.com

ambiot/ambd_sdk/blob/be744260b9230cf01eafcc741d0bd4504cf8c59e/component/soc/realtek/amebad/fwlib/usrcfg/rtl8721dlp_sleepcfg.c#L127


      
          	},

          	{	/* wakepin 3 */

          		_PA_15, /* PINMUX_S0 */

          		_PA_19, /* PINMUX_S1 */

          		_PA_26  /* PINMUX_S2 */

          	},

          };

          

          /* you should set dsleep_wevent_config.BIT_GPIO_WAKE_STS ON if you use wakepin */

          /* can be used by sleep mode & deep sleep mode */

          WAKEPIN_TypeDef sleep_wakepin_config[]=

          {

          //  	Module			Status		Polarity

          	{PINMUX_S0,		OFF,			1},	/* wakeup_0 config */

          	{PINMUX_S0,		OFF,			1},	/* wakeup_1 config */

          	{PINMUX_S0,		OFF,			1},	/* wakeup_2 config */

          	{PINMUX_S0,		OFF,			1},	/* wakeup_3 config */

          	

          	{0xFFFFFFFF,		OFF,			0},	/* Table end */

          };

Thanks

bingsong.li · August 2, 2023, 3:55am

Hi dakamaster,
Thank you very much for your response,
what the context you metioned I had saw before,
what my query is the gpio direction’s impact on low power.

But that’s okay. I found a docment related this, thgouht it’s a simple answer as below.

Sharing it as a reference.
Thanks again.

dakamaster · August 2, 2023, 4:03am

Hi @bingsong.li ,
Thanks for sharing. I will learn more about it!