SuperIC社区_

标题: apollo架构中查看mi中GPIO的控制 [打印本页]

作者: Jie2239342693 时间: 2022-5-17 10:22
标题: apollo架构中查看mi中GPIO的控制

以IR LED GPIO为例

1. 查看board.ini的配置

//id对应的值是E_MI_SYS_BOARD_INFO_ID_GPIO_LED_CTL的值，，PAD_NO是GPIO的实际number

BOARD_GPIO_18_ID = 0x326; #E_MI_SYS_BOARD_INFO_ID_GPIO_LED_CTLBoard_GPIO_18_INVERTOR = 0Board_GPIO_18_PAD_NO = 5; #PAD_PWM_PM

2. 加载board.ini

///vendor/mediatek/proprietary_tv/apollo/linux_core/misdk/mi/mi/modules/sys/src/mi_sys_cfg.c

static MI_BOOL _MI_SYS_CfgLoadAndSetBoardInfo(void)

{

....

//加载BOARD_GPIO_SETTING:BOARD_GPIO_NUM

u8GpioNum = _INIPARSER_GET_INT(_pstBoardCfgIni, "BOARD_GPIO_SETTING:BOARD_GPIO_NUM", 0);

//将GPIO的单独配置加载到pstMiConfigData->astGpioColl

for (u8Num = 0; u8Num < u8GpioNum; u8Num++)
{
      if (pszKey != NULL)
      {
         _SNPRINTF((char *)pszKey, MI_SYS_CONFIG_KEYNAME_LEN, "BOARD_GPIO_SETTING:BOARD_GPIO_%d_ID", u8Num);
         _pstMiConfigData->astGpioColl[u8Num].eId = _INIPARSER_GET_INT(_pstBoardCfgIni, pszKey, 0);
         _SNPRINTF((char *)pszKey, MI_SYS_CONFIG_KEYNAME_LEN, "BOARD_GPIO_SETTING:Board_GPIO_%d_INVERTOR", u8Num);
         _pstMiConfigData->astGpioColl[u8Num].u8Invertor = _INIPARSER_GET_INT(_pstBoardCfgIni, pszKey, 0);
         _SNPRINTF((char *)pszKey, MI_SYS_CONFIG_KEYNAME_LEN, "BOARD_GPIO_SETTING:Board_GPIO_%d_PAD_NO", u8Num);
         _pstMiConfigData->astGpioColl[u8Num].u32PadNo = _INIPARSER_GET_INT(_pstBoardCfgIni, pszKey, 0);
      }
}

}

3. 配置NameId

//vendor/mediatek/proprietary_tv/apollo/linux_core/misdk/mi/mi/modules/gpio/src/mi_gpio.c

static MI_RESULT _MI_GPIO_ConfigGpioInfo(void)

{

....

case E_MI_SYS_BOARD_INFO_ID_GPIO_LED_CTL:
_astGpioInfo[u16Count].eNameId = E_MI_GPIO_NAME_LED_CTL;

....

}

4. 实际调用

//vendor/mediatek/proprietary_tv/apollo/linux_core/misdk/mi/mi/modules/dispout/src/mi_dispout.c

//通过step3配置的NameId获取GPIO的配置，所以查找这个NameId就可以看到有哪些调用

mi_gpio_GetGpioNumByName(E_MI_GPIO_NAME_LED_CTL, &(_astPanelInfo[u32PortIndex].u16LedPadNo)))

欢迎光临 SuperIC社区_ (/)