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enc28j60: Reuse read/writedata() for read/writedatabyte()

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The read/writedatabyte() functions are just a special case of
read/writedata() with a simpler API, so reuse these instead of
duplicating code.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
This commit is contained in:
Benoît Thébaudeau 2015-07-14 18:27:06 +02:00
parent 01251e94c6
commit 35544e81ee
1 changed files with 11 additions and 19 deletions
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30
dev/enc28j60/enc28j60.c
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@ -160,16 +160,6 @@ setregbank(uint8_t bank)
}
/*---------------------------------------------------------------------------*/
static void
writedatabyte(uint8_t byte)
{
enc28j60_arch_spi_select();
/* The Write Buffer Memory (WBM) command is 0 1 1 1 1 0 1 0 */
enc28j60_arch_spi_write(0x7a);
enc28j60_arch_spi_write(byte);
enc28j60_arch_spi_deselect();
}
/*---------------------------------------------------------------------------*/
static void
writedata(uint8_t *data, int datalen)
{
int i;
@ -182,16 +172,10 @@ writedata(uint8_t *data, int datalen)
enc28j60_arch_spi_deselect();
}
/*---------------------------------------------------------------------------*/
static uint8_t
readdatabyte(void)
static void
writedatabyte(uint8_t byte)
{
uint8_t r;
enc28j60_arch_spi_select();
/* THe Read Buffer Memory (RBM) command is 0 0 1 1 1 0 1 0 */
enc28j60_arch_spi_write(0x3a);
r = enc28j60_arch_spi_read();
enc28j60_arch_spi_deselect();
return r;
writedata(&byte, 1);
}
/*---------------------------------------------------------------------------*/
static int
@ -208,6 +192,14 @@ readdata(uint8_t *buf, int len)
return i;
}
/*---------------------------------------------------------------------------*/
static uint8_t
readdatabyte(void)
{
uint8_t r;
readdata(&r, 1);
return r;
}
/*---------------------------------------------------------------------------*/
static void
softreset(void)
{