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Drain TX and flush RX only in UART mode

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This commit is contained in:
Marek Kraus 2022-12-05 22:06:47 +01:00
parent a4489c7cce
commit 6c0c857474
1 changed files with 4 additions and 2 deletions
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6
lib/blisp.c
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@ -185,8 +185,10 @@ blisp_device_handshake(struct blisp_device* device, bool in_ef_loader) {
return -1;
}
sp_drain(serial_port); // Wait for write to send all data
sp_flush(serial_port, SP_BUF_INPUT); // Flush garbage out of RX
if (!in_ef_loader && !device->is_usb) {
sp_drain(serial_port); // Wait for write to send all data
sp_flush(serial_port, SP_BUF_INPUT); // Flush garbage out of RX
}
ret = sp_blocking_read(serial_port, device->rx_buffer, 2, 50);
if (ret >= 2) {