isp checksum check not valid for CH569 #6
Comments
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If I comment out the following lines, the tool works just fine for CH569: diff --git a/src/flashing.rs b/src/flashing.rs
index ab6f6dc..0c9b4cd 100644
--- a/src/flashing.rs
+++ b/src/flashing.rs
@@ -159,7 +159,8 @@ impl<T: Transport> Flashing<T> {
let isp_key = Command::isp_key(vec![0; 0x1e]);
let resp = self.transport.transfer(isp_key)?;
anyhow::ensure!(resp.is_ok(), "isp_key failed");
- anyhow::ensure!(resp.payload()[0] == key_checksum, "isp_key checksum failed");
+ println!("key_checksum: {:x?} payload checksum: {:x?}", key_checksum, resp.payload()[0]);
+ // anyhow::ensure!(resp.payload()[0] == key_checksum, "isp_key checksum failed");
const CHUNK: usize = 56;
let mut address = 0x0;
@@ -184,7 +185,7 @@ impl<T: Transport> Flashing<T> {
let isp_key = Command::isp_key(vec![0; 0x1e]);
let resp = self.transport.transfer(isp_key)?;
anyhow::ensure!(resp.is_ok(), "isp_key failed");
- anyhow::ensure!(resp.payload()[0] == key_checksum, "isp_key checksum failed");
+ //anyhow::ensure!(resp.payload()[0] == key_checksum, "isp_key checksum failed");
const CHUNK: usize = 56;
let mut address = 0x0; |
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The program is flashed and verified successfully and the target resets. |
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Be-careful also the flash code sector size is 256 Bytes on WCH CH56x and not 1024 Bytes like for other CH32VXXX |
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This is where bvernoux added support for the newer version of the bootloader which come with CH569 . |
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I just hit the same problem with a brand new CH569. $ wchisp -v flash test.bin |
For CH569, it reports isp_checksum failed,
but if I comment out those checks, the flashing works fine,
and the binary runs well.
Here is the log (with the first checksum check commented out):
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