fdtype sp_openserport(char *dev, int baud)
{
fdtype fd;
#if IS_WINDOWS
char *dev2 = dev;
if ((strlen(dev) > 3) &&
(tolower((unsigned char)dev[0]) == 'c') &&
(tolower((unsigned char)dev[1]) == 'o') &&
(tolower((unsigned char)dev[2]) == 'm')) {
dev2 = malloc(strlen(dev) + 5);
if (!dev2) {
msg_perr_strerror("Out of memory: ");
return SER_INV_FD;
}
strcpy(dev2, "\\\\.\\");
strcpy(dev2 + 4, dev);
}
fd = CreateFile(dev2, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, NULL);
if (dev2 != dev)
free(dev2);
if (fd == INVALID_HANDLE_VALUE) {
msg_perr_strerror("Cannot open serial port: ");
return SER_INV_FD;
}
if (serialport_config(fd, baud) != 0) {
CloseHandle(fd);
return SER_INV_FD;
}
return fd;
#else
fd = open(dev, O_RDWR | O_NOCTTY | O_NDELAY); // Use O_NDELAY to ignore DCD state
if (fd < 0) {
msg_perr_strerror("Cannot open serial port: ");
return SER_INV_FD;
}
/* Ensure that we use blocking I/O */
const int flags = fcntl(fd, F_GETFL);
if (flags == -1) {
msg_perr_strerror("Could not get serial port mode: ");
goto err;
}
if (fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) != 0) {
msg_perr_strerror("Could not set serial port mode to blocking: ");
goto err;
}
if (serialport_config(fd, baud) != 0) {
goto err;
}
return fd;
err:
close(fd);
return SER_INV_FD;
#endif
}
//对STC15系列的芯片进行数据下载程序
static int Firmware_Download(BYTE *pdat, long size)
{
BYTE arg;
BYTE cnt;
WORD addr;
Initial();
//握手
CommInit();
while (1)
{
if (UartRecvStep == 0)
{
UartSend(0x7f);
DelayXms(10);
}
if (UartReceived)
{
arg = RxBuffer[4];
if (RxBuffer[0] == 0x50)
break;
return eDownloadErrCodeHandshake;
}
if (TimeOut == 0) {
printf("waiting for mcu isp timeout\n");
return eDownloadErrCodeTimeout;
}
}
printf("set comm param\n");
//设置参数
TxBuffer[0] = 0x01;
TxBuffer[1] = arg;
TxBuffer[2] = 0x40;
TxBuffer[3] = HIBYTE(RL(MAXBAUD));
TxBuffer[4] = LOBYTE(RL(MAXBAUD));
TxBuffer[5] = 0x00;
TxBuffer[6] = 0x00;
TxBuffer[7] = 0xc3;
CommSend(8);
while (1)
{
if (TimeOut == 0) return eDownloadErrCodeTimeout;
if (UartReceived)
{
if (RxBuffer[0] == 0x01) break;
return eDownloadErrCodeSetCommParam;
}
}
printf("download prepare \n");
//准备
serialport_config(handle_download_port,MAXBAUD,8,1,'e');
DelayXms(10);
TxBuffer[0] = 0x05;
CommSend(1);
while (1)
{
if (TimeOut == 0) return eDownloadErrCodeTimeout;
if (UartReceived)
{
if (RxBuffer[0] == 0x05) break;
return eDownloadErrCodeSetCommParam;
}
}
printf("erase flash ...\n");
//擦除
DelayXms(10);
TxBuffer[0] = 0x03;
TxBuffer[1] = 0x00;
CommSend(2);
TimeOut = 100;
while (1)
{
if (TimeOut == 0) return eDownloadErrCodeTimeout;
if (UartReceived)
{
if (RxBuffer[0] == 0x03) break;
return eDownloadErrCodeEraseFlash;
}
}
printf("program flash size[0x%lx]...\n",size);
//写用户代码
DelayXms(10);
addr = 0;
TxBuffer[0] = 0x22;
while (addr < size)
{
TxBuffer[1] = HIBYTE(addr);
TxBuffer[2] = LOBYTE(addr);
cnt = 0;
while (addr < size)
{
TxBuffer[cnt+3] = pdat[addr];
addr++;
cnt++;
if (cnt >= 128) break;
}
CommSend(cnt + 3);
while (1)
{
if (TimeOut == 0) return eDownloadErrCodeTimeout;
if (UartReceived)
{
if ((RxBuffer[0] == 0x02) && (RxBuffer[1] == 'T')) break;
return eDownloadErrCodeProgramFlash;
}
}
TxBuffer[0] = 0x02;
}
printf("program hardware option ... skipped\n");
#if 0
//写硬件选项(如果不需要修改硬件选项,此步骤可直接跳过)
DelayXms(10);
for (cnt=0; cnt<128; cnt++)
{
TxBuffer[cnt] = 0xff;
}
//Do we know details of hardware options???
TxBuffer[0] = 0x04;
TxBuffer[1] = 0x00;
TxBuffer[2] = 0x00;
TxBuffer[34] = 0xfd;
TxBuffer[62] = arg;
TxBuffer[63] = 0x7f;
TxBuffer[64] = 0xf7;
TxBuffer[65] = 0x7b;
TxBuffer[66] = 0x1f;
CommSend(67);
while (1)
{
if (TimeOut == 0) return eDownloadErrCodeTimeout;
if (UartReceived)
{
if ((RxBuffer[0] == 0x04) && (RxBuffer[1] == 'T')) break;
return eDownloadErrCodeProgramOption;
}
}
#endif
//下载完成
return eDownloadErrCodeSuccess;
}
static void Initial(void)
{
//串口数据模式必须为8位数据+1位偶检验
serialport_config(handle_download_port,MINBAUD,8,1,'e');
}
