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

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31377 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 7 insertions, 9 deletions

diff --git a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
index c22bd2c..c8b2c96 100644
--- a/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
+++ b/firmware/target/arm/tms320dm320/sansa-connect/avr-sansaconnect.c
@@ -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;
diff --git a/firmware/target/arm/tms320dm320/system-dm320.c b/firmware/target/arm/tms320dm320/system-dm320.c
index a2a9ec3..e455ade 100644
--- a/firmware/target/arm/tms320dm320/system-dm320.c
+++ b/firmware/target/arm/tms320dm320/system-dm320.c
@@ -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));
     }
 }