1299.patch

1299.patch

diff --git a/build/devices/esp32/xsProj-esp32s3/main/main.c b/build/devices/esp32/xsProj-esp32s3/main/main.c
index de55f62af..034ecc455 100644
--- a/build/devices/esp32/xsProj-esp32s3/main/main.c
+++ b/build/devices/esp32/xsProj-esp32s3/main/main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2023  Moddable Tech, Inc.
+ * Copyright (c) 2016-2024  Moddable Tech, Inc.
  *
  *   This file is part of the Moddable SDK Runtime.
  * 
@@ -69,6 +69,7 @@
                #include "tusb_cdc_acm.h"
        #elif (USE_USB == 2)
                #include "driver/usb_serial_jtag.h"
+               #include "hal/usb_serial_jtag_ll.h"
        #endif
 #else
        #include "driver/uart.h"
@@ -196,7 +197,7 @@ printf("fifo_init - bad size: %ld\r\n", size);
 static void debug_task(void *pvParameter)
 {
 #if (USE_USB == 2)
-       const usb_serial_jtag_driver_config_t cfg = { .rx_buffer_size = 4096, .tx_buffer_size = 2048 };
+       const usb_serial_jtag_driver_config_t cfg = { .rx_buffer_size = 2048, .tx_buffer_size = 64 };
        usb_serial_jtag_driver_install(&cfg);
 #endif
 
@@ -405,11 +406,11 @@ uint8_t ESP_setBaud(int baud) {
 
 WEAK void ESP_put(uint8_t *c, int count) {
 #if (USE_USB == 2)
-       int sent = 0;
-       while (count > 0) {
-               sent = usb_serial_jtag_write_bytes(c, count, 10);
-               c += sent;
-               count -= sent;
+       while (count-- > 0) {
+               while (0 == usb_serial_jtag_ll_write_txfifo(c, 1))
+                       ;
+               usb_serial_jtag_ll_txfifo_flush();
+               c++;
        }   
 #else
        uart_write_bytes(USE_UART, (char *)c, count);
@@ -417,9 +418,11 @@ WEAK void ESP_put(uint8_t *c, int count) {
 }
 
 WEAK void ESP_putc(int c) {
-       char cx = c;
+       uint8_t cx = c;
 #if (USE_USB == 2)
-    usb_serial_jtag_write_bytes(&cx, 1, 1);
+       while (usb_serial_jtag_ll_write_txfifo(&cx, 1) < 1)
+               ;
+       usb_serial_jtag_ll_txfifo_flush();
 #else
        uart_write_bytes(USE_UART, &cx, 1);
 #endif