Posted on May 19, 2014 at 01:48uint8_t P_LIS302_Read1Adr(uint8_t adr)
{
uint8_t ret_wert=0;
uint8_t spi_wert;
// Chip Select to Lo
P_LIS302_CS(
Bit_RESET
);
// read an address
spi_wert=(adr&0x3F);
spi_wert|=0x80;
// 0b1000 0000 or
// Send address
UB_SPI1_SendByte(spi_wert);
// read address
ret_wert=UB_SPI1_SendByte(0x55);
// Chip Select to Hi
P_LIS302_CS(
Bit_SET
);
return
(ret_wert);
}
i get this code in repository, so i dont know all the code ...
I ask about why we should stop
P_LIS302_CS(
Bit_RESET
);
in this code is here
</p>
void
</b>
P_LIS302_CS(
BitAction
wert) {
if
(wert==
Bit_RESET
) {
LIS302_CS_GPIO_PORT->
BSRRH
= LIS302_CS_PIN;
}
else
{
LIS302_CS_GPIO_PORT->
BSRRL
= LIS302_CS_PIN;
}
}
why ? #rtfm-lmgtfy
