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Sansa Connect: use udelay() in AVR spi_txrx().

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31377 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomasz Moń 2011-12-20 13:36:43 +00:00
parent 4aec001244
commit 44d1a26271
2 changed files with 7 additions and 9 deletions
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8
firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
View file

@ -229,8 +229,8 @@ static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
{
IO_SERIAL1_TX_DATA = buf_tx[i];
/* a short wait for AVR to process data */
sleep(0);
/* 100 us wait for AVR */
udelay(100);
do
{
@ -240,8 +240,8 @@ static void spi_txrx(unsigned char *buf_tx, unsigned char *buf_rx, int n)
if (buf_rx != NULL)
buf_rx[i] = rxdata & 0xFF;
/* seems to be unneccessary */
//udelay(100);
/* 100 us wait to give AVR time to process data */
udelay(100);
}
IO_SERIAL1_TX_ENABLE = 0;

8
firmware/target/arm/tms320dm320/system-dm320.c
View file

@ -426,7 +426,7 @@ void udelay(int usec) {
stop = count + usec*((tmp+1)/10000);
stop += (unsigned short)(((unsigned long)(usec)*((tmp%10000)+1))/10000);
/* stop values over tmdiv won't ever be reached */
/* stop values over TMDIV won't ever be reached */
if (stop > tmp)
{
stop -= tmp;
@ -435,15 +435,13 @@ void udelay(int usec) {
if (stop < count)
{
/* udelay will end after counter reset (tick) */
while ((((tmp = IO_TIMER1_TMCNT) < stop) &&
(current_tick != prev_tick)) ||
while (((IO_TIMER1_TMCNT < stop) && (current_tick != prev_tick)) ||
(current_tick == prev_tick)); /* ensure new tick */
}
else
{
/* udelay will end before counter reset (tick) */
while (((tmp = IO_TIMER1_TMCNT) < stop) &&
(current_tick == prev_tick));
while ((IO_TIMER1_TMCNT < stop) && (current_tick == prev_tick));
}
}