X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Ffwflash.c;h=2704fd5a41d96c484e26dc020be8b8e174fe2105;hp=c4a2155a6089a71ce083c36b7bf6fb466bc2187a;hb=eca427bb7d2ac0dbd337a3797fcea63991c51b38;hpb=2cbc6d2f18a38237fcd1df2ef67ba315af080f03

diff --git a/betty/fwflash.c b/betty/fwflash.c
index c4a2155..2704fd5 100644
--- a/betty/fwflash.c
+++ b/betty/fwflash.c
@@ -295,6 +295,8 @@ void receive_data_and_write_to_flash(u32 addr,u32 datalen) {
 	u8 bank;
 	u32 i;
 	u16 data;
+	u8 byte;
+	u8 cksm;
 
 	/* which bank to program */
 	if(addr<0x82000000)
@@ -306,9 +308,14 @@ void receive_data_and_write_to_flash(u32 addr,u32 datalen) {
 	unlock_bypass(bank);
 
 	/* receive and write data */
+	cksm=0;
 	for(i=0;i<datalen/2;i++) {
-		data=uart0_get_byte();
-		data=uart0_get_byte()<<8;
+		byte=uart0_get_byte();
+		data=byte;
+		cksm+=byte;
+		byte=uart0_get_byte();
+		cksm+=byte;
+		data|=byte<<8;
 		*((unsigned volatile short *)addr)=0xa0;
 		*((unsigned volatile short *)addr)=data;
 		addr+=2;
@@ -316,6 +323,9 @@ void receive_data_and_write_to_flash(u32 addr,u32 datalen) {
 
 	/* relock bypass */
 	unlock_bypass_reset(bank);
+
+	/* send an ack */
+	uart0_send_byte(cksm);
 }
 
 /*