From 0ed390771c0ace3f048153591ec7476cc54b9392 Mon Sep 17 00:00:00 2001 From: A Sheaff Date: Wed, 9 Jan 2013 17:00:52 -0500 Subject: [PATCH] Clears DMA config registers for Discovery F4 board to allow flash programming. See texane/stlink issue #74. --- flash/main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/flash/main.c b/flash/main.c index 4716b66..1d616ae 100644 --- 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) && -- 2.30.2