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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <conio.h>
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#include <wtypes.h>
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void download(const char * filename, HANDLE comm)
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{
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char buffer[1000];
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int total = 0;
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FILE * in = fopen(filename, "r");
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assert(in);
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for (;;)
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{
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const int len = fread(buffer, 1, sizeof(buffer), in);
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if (len == 0) break;
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total += len;
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printf("%d", total);
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DWORD written = 0;
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WriteFile(comm, buffer, len, &written, 0);
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if (written != len)
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{
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errno = GetLastError();
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perror("WriteFile() failed");
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return;
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}
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printf(" ");
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}
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printf("\nTotal of %d (0x%X) bytes downloaded\n", total, total);
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fclose(in);
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}
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int main(int argc, char * argv[])
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{
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const char * filename = "rtos.ihx";
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if (argc > 1) filename = argv[1];
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HANDLE comm = CreateFile("COM1",
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GENERIC_READ | GENERIC_WRITE,
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0,
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0,
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OPEN_EXISTING,
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0,
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0);
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assert(comm);
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if (!SetupComm(comm, 1024, 1024))
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{
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errno = GetLastError();
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perror("SetupComm() failed");
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fprintf(stderr,
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"Can't open COM1: (probably used by another process)\n");
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return 1;
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}
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DCB dcb;
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if (!GetCommState(comm, &dcb))
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{
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errno = GetLastError();
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perror("GetCommState() failed");
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return 1;
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}
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dcb.BaudRate = CBR_115200;
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dcb.ByteSize = 8;
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dcb.Parity = NOPARITY;
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dcb.StopBits = ONESTOPBIT;
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dcb.fOutxCtsFlow = 0;
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dcb.fOutxDsrFlow = 0;
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dcb.fDsrSensitivity = 0;
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dcb.fDtrControl = DTR_CONTROL_DISABLE;
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dcb.fRtsControl = RTS_CONTROL_DISABLE;
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dcb.fOutX = 0;
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dcb.fInX = 0;
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dcb.fNull = 0;
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dcb.fAbortOnError = 0;
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if (!SetCommState(comm, &dcb))
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{
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errno = GetLastError();
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perror("SetCommState() failed");
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return 1;
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}
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COMMTIMEOUTS touts = { MAXDWORD, 0, 50, 0, 0 };
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if (!SetCommTimeouts(comm, &touts))
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{
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errno = GetLastError();
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perror("SetCommTimeouts() failed");
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return 1;
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}
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char buffer[1000];
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int std = fileno(stdin);
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for (;;)
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{
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DWORD read = 0;
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DWORD written = 0;
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ReadFile(comm, buffer, sizeof(buffer), &read, 0);
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char c;
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for (int i = 0; i < read; i++)
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{
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c = buffer[i];
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if (c == '\r') putchar(c);
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else if (c == '\n') putchar(c);
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else if (c < ' ') printf("^%c", c + 0x40);
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else if (c < 0x7F) putchar(c);
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else printf("\\%2.2X", c & 0xFF);
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}
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if (kbhit())
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{
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c = _getch();
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if (c == 0x1B) break;
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if (c == 0x0C)
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{
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download(filename, comm);
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continue;
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}
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WriteFile(comm, &c, 1, &written, 0);
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}
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}
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}
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