哪位大佬有CH552的USB CDC波特率自适应的例程？

lmn2005 · 发表于 2024-12-11 11:53:53

本帖最后由 lmn2005 于 2024-12-11 15:04 编辑

某恒提供的CH552的USB CDC例程，波特率是固定的。
波特率不能自适应，因而用途不大。
想从官方论坛上要求提供一个波特率自适应的例程，实在太难了！
想着自己修改，却因水平关系而无从下手，所以特来这里请教。
哪位大佬手头有此例程的，请分享一下，谢谢！

附：原CH552 CDC例程下载网址：https://www.wch.cn/uploads/file/20210113/1610527372338156.zip

bg4rff · 发表于 2024-12-11 15:09:56

https://www.wch.cn/bbs/thread-121901-1.html

lmn2005 · 发表于 2024-12-11 15:47:17

本帖最后由 lmn2005 于 2024-12-12 11:01 编辑

bg4rff 发表于 2024-12-11 15:09
https://www.wch.cn/bbs/thread-121901-1.html

这是arduino版本的，且原来的链接失效了

wxws · 发表于 2024-12-12 07:15:13

没失效呀： 52~69行实现了这一功能

arduino版的，自己改改一样。

#ifndef USER_USB_RAM
#error "This example needs to be compiled with a USER USB setting"
#endif

#include "src/userUsbCdc/USBCDC.h"
extern __xdata uint8_t LineCoding[]; //lineCoding of CDC is located in this array
extern __xdata uint8_t controlLineState;
__xdata uint32_t oldBaudRate = 9600;
__xdata uint8_t oldLineState = 0;

#define USB_SWITCH_PIN 33
#define POWER_TARGET_PIN 34
#define USBDP_PULLUP_TARGET_PIN 14
#define BOOTLOADER_PULLDOWN_TARGET_PIN 16

#define SENSE_TARGET_SWTICH_PERF 17
#define POWER_PERF_PIN 11

void bootloaderRoutine() {
  USB_CTRL = 0;
  EA = 0;                                                                   //Disabling all interrupts is required.
  delayMicroseconds(50000);
  delayMicroseconds(50000);
  __asm__ ("lcall #0x3800");                                              //Jump to bootloader code
  while (1);
}

void setup() {
  USBInit();

  pinMode(USB_SWITCH_PIN, OUTPUT);
  digitalWrite(USB_SWITCH_PIN, LOW);  //connect target to computer USB

  pinMode(POWER_TARGET_PIN, OUTPUT);
  digitalWrite(POWER_TARGET_PIN, LOW);

  pinMode(USBDP_PULLUP_TARGET_PIN, OUTPUT);
  digitalWrite(USBDP_PULLUP_TARGET_PIN, HIGH);

  pinMode(BOOTLOADER_PULLDOWN_TARGET_PIN, INPUT);

  pinMode(SENSE_TARGET_SWTICH_PERF, INPUT_PULLUP);

  pinMode(POWER_PERF_PIN, OUTPUT);
  digitalWrite(POWER_PERF_PIN, HIGH);

  Serial0_begin(9600);

}

void loop() {
  __xdata uint32_t currentBaudRate = *((__xdata uint32_t *)LineCoding); //both linecoding and sdcc are little-endian
  __xdata uint8_t currentLineState = controlLineState; //both linecoding and sdcc are little-endian

  while (USBSerial_available()) {
char serialChar = USBSerial_read();
Serial0_write(serialChar);
  }
  Serial0_flush();

  while (Serial0_available()) {
char serialChar = Serial0_read();
USBSerial_write(serialChar);
  }
  USBSerial_flush();

  if (oldBaudRate != currentBaudRate) {
oldBaudRate = currentBaudRate;
Serial0_begin(currentBaudRate);
  }

  if (oldLineState != currentLineState) {
if  ( ((currentLineState & 0x01) == 0) && ((oldLineState & 0x01) == 1)) {
   if (currentBaudRate == 1200) {
      digitalWrite(POWER_TARGET_PIN, HIGH); //Cut target power
      digitalWrite(POWER_PERF_PIN, HIGH); //Cut peripheral power
      digitalWrite(USB_SWITCH_PIN, LOW);  //connect target to computer USB
      delay(100);
      digitalWrite(USBDP_PULLUP_TARGET_PIN, LOW); //Connect pull up resistor to target
      digitalWrite(BOOTLOADER_PULLDOWN_TARGET_PIN, LOW); //if the bootloader require a pin to be pulled low, use this pin
      pinMode(BOOTLOADER_PULLDOWN_TARGET_PIN, OUTPUT);
      delay(10);
      digitalWrite(POWER_TARGET_PIN, LOW); //Restore target power
      delay(50);
      digitalWrite(USBDP_PULLUP_TARGET_PIN, HIGH); //Disconnect pull up resistor to target
      pinMode(BOOTLOADER_PULLDOWN_TARGET_PIN, INPUT);
   }
}
oldLineState = currentLineState;
  }

  if (digitalRead(15) == LOW) {
delay(10);
if (digitalRead(15) == LOW) {
   bootloaderRoutine();
}
  }

  if (digitalRead(SENSE_TARGET_SWTICH_PERF)) {
digitalWrite(POWER_PERF_PIN, HIGH); //Cut peripheral power
digitalWrite(USB_SWITCH_PIN, LOW);  //connect target to computer USB
  } else {
digitalWrite(POWER_PERF_PIN, LOW); //Set peripheral power
digitalWrite(USB_SWITCH_PIN, HIGH);  //connect target to peripheral USB
  }

}

bg4rff · 发表于 2024-12-12 09:56:31

  if (oldBaudRate != currentBaudRate) {
   oldBaudRate = currentBaudRate;
   Serial0_begin(currentBaudRate);
}
其实这段是关键，看看波特率变化了没有，变化了就更新

lmn2005 · 发表于 2024-12-12 10:06:54

wxws 发表于 2024-12-12 07:15
没失效呀： 52~69行实现了这一功能

arduino版的，自己改改一样。

原链接昨天打不开，今天打开了，我已经把整个zip下载下来了，有空看看能否实现这功能。

lmn2005 · 发表于 2024-12-12 10:56:53

wxws 发表于 2024-12-12 07:15
没失效呀： 52~69行实现了这一功能

arduino版的，自己改改一样。

编译提示错误：

Arduino:1.8.19 (Windows 7), 开发板："CH552 Board, 16 MHz (internal), 3.3V or 5V, Default CDC, Serial"

RebootToolTest:2:2: error: #error "This example needs to be compiled with a USER USB setting"

exit status 1

#error "This example needs to be compiled with a USER USB setting"

bg4rff · 发表于 2024-12-13 10:51:06

lmn2005 发表于 2024-12-12 10:56
编译提示错误：

自带的例子

lmn2005 · 发表于 2024-12-13 10:59:21

bg4rff 发表于 2024-12-13 10:51
自带的例子

示例编译也出错

bg4rff · 发表于 2024-12-13 11:40:43

lmn2005 发表于 2024-12-13 10:59
示例编译也出错

我用的IDE2.3.4
https://cos.thinkcreate.us/packa ... oudflare_index.json
这里的包
或者这个
https://raw.githubusercontent.co ... no_mcs51_index.json
就是github那下面说明里的

lmn2005 · 发表于 2024-12-13 11:48:04

bg4rff 发表于 2024-12-13 11:40
我用的IDE2.3.4
https://cos.thinkcreate.us/package_ch55xduino_mcs51_newest_cloudflare_index.json
这 ...

哦，那可能是版本的问题了，我现在用的是win7的，所以只能用低版本的IDE

bg4rff · 发表于 2024-12-13 11:50:42

本帖最后由 bg4rff 于 2024-12-13 11:55 编辑

lmn2005 发表于 2024-12-13 10:59
示例编译也出错

菜单，工具，USB setting选第四个

你那个选148那个

lmn2005 · 发表于 2024-12-13 11:55:53

bg4rff 发表于 2024-12-13 11:50
菜单，工具，USB setting选第四个

原来是这个选项选错了，现在编译成功了，谢谢！

bg4rff · 发表于 2024-12-13 11:57:08

bg4rff 发表于 2024-12-13 11:50
菜单，工具，USB setting选第四个

你那个选148那个

看这个，选不一样的哦

bg4rff · 发表于 2024-12-13 11:58:57

lmn2005 发表于 2024-12-12 10:56
编译提示错误：

错误就是这个原因，默认的那个ram未定义

bg4rff · 发表于 2024-12-13 11:59:26

## USB Memory Settings
## ----------------------------------------------
ch552.menu.usb_settings.usbcdc=Default CDC
ch552.menu.usb_settings.usbcdc.upload.maximum_data_size=876
ch552.menu.usb_settings.usbcdc.upload.xdata_location=148
ch552.menu.usb_settings.usbcdc.build.extra_flags=-DEP0_ADDR=0 -DEP1_ADDR=10 -DEP2_ADDR=20
## ----
ch552.menu.usb_settings.user148=USER CODE w/ 148B USB ram
ch552.menu.usb_settings.user148.upload.maximum_data_size=876
ch552.menu.usb_settings.user148.upload.xdata_location=148
ch552.menu.usb_settings.user148.build.extra_flags=-DUSER_USB_RAM=148
## ----
ch552.menu.usb_settings.user0=USER CODE w/ 0B USB ram
ch552.menu.usb_settings.user0.upload.maximum_data_size=1024
ch552.menu.usb_settings.user0.upload.xdata_location=0
ch552.menu.usb_settings.user0.build.extra_flags=-DUSER_USB_RAM=0
## ----
ch552.menu.usb_settings.user266=USER CODE w/ 266B USB ram
ch552.menu.usb_settings.user266.upload.maximum_data_size=758
ch552.menu.usb_settings.user266.upload.xdata_location=266
ch552.menu.usb_settings.user266.build.extra_flags=-DUSER_USB_RAM=266