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fix(read_flash): flush transmit buffer less often to inrease throughput

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Closes https://github.com/espressif/esptool/issues/936
This commit is contained in:
Peter Dragun
2024-01-03 13:55:31 +01:00
committed by Radim Karniš
parent 17866a56d2
commit 8ce5ed3c2b
6 changed files with 28 additions and 21 deletions
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esptool/targets/stub_flasher/stub_flasher_32c3.json
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esptool/targets/stub_flasher/stub_flasher_32c5beta3.json
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esptool/targets/stub_flasher/stub_flasher_32c6.json
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esptool/targets/stub_flasher/stub_flasher_32h2.json
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esptool/targets/stub_flasher/stub_flasher_32s3.json
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flasher_stub/stub_io.c
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@@ -171,8 +171,15 @@ void stub_tx_one_char(char c)
#endif // WITH_USB_OTG
uart_tx_one_char(c);
#if WITH_USB_JTAG_SERIAL
static unsigned short transferred_without_flush = 0;
if (stub_uses_usb_jtag_serial()){
stub_tx_flush();
// Defer flushing until we have a (full - 1) packet or a end of packet (0xc0) byte to increase throughput.
// Note that deferring flushing until we have a full packet can cause hang-ups on some platforms.
++transferred_without_flush;
if (c == '\xc0' || transferred_without_flush >= 63) {
stub_tx_flush();
transferred_without_flush = 0;
}
}
#endif // WITH_USB_JTAG_SERIAL
}