1.2.20.5 SDMMCx_IsDatLineBusy Function

C

/* x = SDMMC instance number */

bool SDMMCx_IsDatLineBusy ( void )

Summary

Returns the status of the data line.

Description

The status of the data line must be checked before initiating a data transfer by calling this API

Precondition

SDMMCx_Initialize() must have been called first for the associated instance.

Parameters

None.

Returns

true - If the data line is busy.

false - If the data line is ready.

Example

if (SDMMC1_IsDatLineBusy() == false)
{
    // Transmit next data
}

Remarks

This function must be called to check the status of Commands with busy signal (example R1b).