Clears DMA config registers for Discovery F4 board

to allow flash programming. See texane/stlink issue stlink-org#74.
6thimage · Jan 9, 2013 · 0ed3907 · 0ed3907
1 parent d66a700
commit 0ed3907
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/flash/main.c b/flash/main.c
@@ -123,6 +123,14 @@ int main(int ac, char** av)
   if (stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE)
     stlink_enter_swd_mode(sl);
 
+// Disable DMA - Set All DMA CCR Registers to zero. - AKS 1/7/2013
+    memset(sl->q_buf,0,4);
+	for (int i=0;i<8;i++) {
+	    stlink_write_mem32(sl,0x40026000+0x10+0x18*i,4);
+	    stlink_write_mem32(sl,0x40026400+0x10+0x18*i,4);
+	    stlink_write_mem32(sl,0x40026000+0x24+0x18*i,4);
+	    stlink_write_mem32(sl,0x40026400+0x24+0x18*i,4);
+	}
   if (o.cmd == DO_WRITE) /* write */
   {
     if ((o.addr >= sl->flash_base) &&