Esempi in C++ (Cpp) per ESPI_COM_CS

Esempio n. 1

File: cpu_peri_spi.c Progetto: djyos/djyos

//-----片选配置---------------------------------------------------------
//功能：片选使能，并初始化寄存器cs对应的寄存器
//参数：tpSpi，被操作的spi控制结构的地址
//      data_len,传送的数据长度
//返回：无
//----------------------------------------------------------------------
void __spi_cs_activate(volatile tagSpiReg * tpSpi,u32 data_len)
{
    unsigned int com = 0;

    com &= ~(ESPI_COM_CS(0x3) | ESPI_COM_TRANLEN(0xFFFF));
    com |= ESPI_COM_CS(spi_cs);
    com |= ESPI_COM_TRANLEN(data_len - 1);
    tpSpi->com = com;
}

Esempio n. 2

File: fsl_espi.c Progetto: AeroGirl/u-boot-kern3.2

void spi_cs_activate(struct spi_slave *slave)
{
	struct fsl_spi_slave *fsl = to_fsl_spi_slave(slave);
	ccsr_espi_t *espi = (void *)(CONFIG_SYS_MPC85xx_ESPI_ADDR);
	unsigned int com = 0;
	size_t data_len = fsl->data_len;

	com &= ~(ESPI_COM_CS(0x3) | ESPI_COM_TRANLEN(0xFFFF));
	com |= ESPI_COM_CS(slave->cs);
	com |= ESPI_COM_TRANLEN(data_len - 1);
	out_be32(&espi->com, com);
}