problem with USBSerial USB串口发送问题

我试着发送hex数据给ch552g，先发送字符串 552可以接收到，再发送64byte数据都是0 I try to send HEX data to ch552g, first send a char to 552, then send 64 byte ,but recived all 0 PC: python3 (pip install comports pyserial) 需要安装依赖库运行，修改com信息

python code

from serial import Serial
from serial.tools.list_ports import comports
from time import sleep
comx = "COM9"
class Programmer(Serial):
    def __init__(self):
        super().__init__(baudrate = 115200, timeout = 3, write_timeout = 2)
    def connect(self,comport):
        for p in comports():
            if p.device == comport:
                self.port = p.device
                try:
                    self.open()
                    if self.is_open:
                        return True
                except:
                    continue
        return False
    def sendcommand(self, cmd, chip='', startAddr=-1, endAddr=-1):
        cmd += ' %6s' % chip
        if startAddr >= 0:
            cmd += '  %04x' % startAddr
            if endAddr >= 0:
                cmd += '  %04x' % endAddr
        self.write((cmd + '\n').encode())
        print("command:{}".format(cmd))
def getReady():
    prom = Programmer()
    if prom.connect(comx):
        print("连接")
    else:
        print("未连接")
        exit(0)
    if prom.is_open:
        prom.sendcommand('t')
        sleep(0.5)
        print(prom.readline())
def sendCommandA():
    prom = Programmer()
    if prom.connect(comx):
        print("连接")
    else:
        print("未连接")
        exit(0)
    if prom.is_open:
        prom.sendcommand('a')
        sleep(1)
        buffer_data = []
        for i in range(64):
            buffer_data.append(hex(i))
            prom.write(i)
            prom.flush()
        print("send:{}".format(len(buffer_data)))
        print(buffer_data)
        line = prom.readline()
        print("read:{}".format(len(line)))
        chars = []
        for i in line:
            chars.append(hex(i))
        print(chars)
if __name__ == '__main__':
    getReady()
    sendCommandA()
    getReady()

arduino code

#define VERSION         "1.0"
#define INFO            "EEPROM_CH552"
#define READY           "Ready"

// Buffers
#define BUFF_LEN 64
#define CMD_LEN  22

__xdata char pageBuffer[64];     // 写入芯片page缓存
__xdata char cmdBuffer[CMD_LEN]; // 串口cmd命令缓存

void setup() {

  while (!USBSerial()) {
    delay(50);
  }
}

void readCommand() {
  for(uint8_t i=0; i< CMD_LEN; i++) cmdBuffer[i] = 0;  // clear command buffer
  char c = 0xff; uint8_t idx = 0;                        // initialize variables
  do {
    if(USBSerial_available()) {
      c = USBSerial_read();
      cmdBuffer[idx++] = c;
    }
  } while (c != '\n' && idx < CMD_LEN);
  cmdBuffer[idx - 1] = 0;                     // change last newline to '\0' termination
}

// read buff then write serial
void aa(){
  for(uint8_t i=0; i< BUFF_LEN; i++) pageBuffer[i] = 0;  // clear command buffer
  char c = 0xff; uint8_t idx = 0;                        // initialize variables
  do {
    if(USBSerial_available()) {
      c = USBSerial_read();
      pageBuffer[idx++] = c;
    }
  } while (idx < BUFF_LEN);

  for(idx=0; idx<BUFF_LEN; idx++){
    USBSerial_write(pageBuffer[idx]);
    USBSerial_flush();
  }
  USBSerial_println("ok");
  USBSerial_flush();
}

// read buff then write serial
void bb(){
  for(uint8_t i=0; i< BUFF_LEN; i++) pageBuffer[i] = 0;  // clear command buffer
  char c = 0xff; uint8_t idx = 0;                        // initialize variables
  do {
    if(USBSerial_available()) {
      c = USBSerial_read();
      pageBuffer[idx++] = c;
    }
  } while (idx < BUFF_LEN);

  for(idx=0; idx<BUFF_LEN; idx++){
    USBSerial_print(pageBuffer[idx]);
    USBSerial_flush();
  }
  USBSerial_println("ok");
  USBSerial_flush();
}

void loop() {
  readCommand();
  char cmd = cmdBuffer[0];

  switch(cmd) {
    case 'i':   USBSerial_println(INFO);USBSerial_flush(); break;
    case 'v':   USBSerial_println(VERSION);USBSerial_flush(); break;
    case 't':   USBSerial_println(READY);USBSerial_flush(); break;
    //test Serial read & write
    case 'a':   aa(); break;
    case 'b':   bb(); break;
    default:    break;
  }    
}

期望发送命令和64byte数据，收到64byte数据和 ok\r\n 实际收到是 64个0 然后是ok\r\n

run python code, send command a to ch552, send 64 byte from 0x0 to 0x3F, recive from USBSerial 64 byte 0x0 not 0x0-0x3F

DeqingSun / ch55xduino

problem with USBSerial USB串口发送问题 #94