bslathi19/super6502
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Consolidate another res1 function

Browse Source
This commit is contained in:
Byron Lathi
2023-07-23 17:30:05 -07:00
parent 60072603d9
commit 2ef463846f
1 changed files with 24 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
sw/bootloader/devices/sd_card.c
View File

@@ -67,6 +67,29 @@ uint8_t SD_init()
return SD_SUCCESS;
}
// Send a command with starting end ending clock pulses
uint8_t res1_cmd(uint8_t cmd, uint32_t arg, uint8_t crc)
{
uint8_t res1;
// assert chip select
spi_exchange(0xFF);
spi_select(0);
spi_exchange(0xFF);
// send CMD0
SD_command(cmd, arg, crc);
// read response
res1 = SD_readRes1();
// deassert chip select
spi_exchange(0xFF);
spi_deselect(0);
spi_exchange(0xFF);
return res1;
}
/*******************************************************************************
Run power up sequence
*******************************************************************************/
@@ -187,25 +210,7 @@ void SD_readBytes(uint8_t *res, uint8_t n)
*******************************************************************************/
uint8_t SD_goIdleState()
{
uint8_t res1;
// assert chip select
spi_exchange(0xFF);
spi_select(0);
spi_exchange(0xFF);
// send CMD0
SD_command(CMD0, CMD0_ARG, CMD0_CRC);
// read response
res1 = SD_readRes1();
// deassert chip select
spi_exchange(0xFF);
spi_deselect(0);
spi_exchange(0xFF);
return res1;
return res1_cmd(CMD0, CMD0_ARG, CMD0_CRC);
}
/*******************************************************************************
@@ -407,29 +412,6 @@ void SD_readOCR(uint8_t *res)
spi_exchange(0xFF);
}
// Send a command with starting end ending clock pulses
uint8_t res1_cmd(uint8_t cmd, uint32_t arg, uint8_t crc)
{
uint8_t res1;
// assert chip select
spi_exchange(0xFF);
spi_select(0);
spi_exchange(0xFF);
// send CMD0
SD_command(cmd, arg, crc);
// read response
res1 = SD_readRes1();
// deassert chip select
spi_exchange(0xFF);
spi_deselect(0);
spi_exchange(0xFF);
return res1;
}
/*******************************************************************************
Send application command (CMD55)
*******************************************************************************/