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Windows: implement automatic uart port detection and input flush (Thanks to Edwin Evans)

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This commit is contained in:
Romuald Conty 2011-06-16 11:50:39 +00:00
parent a8394caed5
commit c40319c7b4
1 changed files with 25 additions and 9 deletions
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34
libnfc/buses/uart_win32.c
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@ -90,7 +90,7 @@ uart_close (const serial_port sp)
void
uart_flush_input (const serial_port sp)
{
// TODO: Implement me
PurgeComm(((serial_port_windows *) sp)->hPort, PURGE_RXABORT | PURGE_RXCLEAR);
}
void
@ -191,21 +191,37 @@ uart_send (serial_port sp, const byte_t * pbtTx, const size_t szTx)
return 0;
}
BOOL is_port_available(int nPort)
{
TCHAR szPort[15];
COMMCONFIG cc;
DWORD dwCCSize;
sprintf(szPort, "COM%d", nPort);
// Check if this port is available
dwCCSize = sizeof(cc);
return GetDefaultCommConfig(szPort, &cc, &dwCCSize);
}
// Path to the serial port is OS-dependant.
// Try to guess what we should use.
#define NUM_SERIAL_PORTS 8
#define MAX_SERIAL_PORT_WIN 255
char **
uart_list_ports (void)
{
// TODO: Wrote an automatic detection of Windows serial ports
char ** availablePorts = malloc((1 + NUM_SERIAL_PORTS) * sizeof(char*));
char ** availablePorts = malloc((1 + MAX_SERIAL_PORT_WIN) * sizeof(char*));
int curIndex = 0;
int i;
for (i = 0; i < NUM_SERIAL_PORTS; i++) {
availablePorts[i] = (char*)malloc(10);
sprintf(availablePorts[i], "COM%d", i+1);
for (i = 1; i <= MAX_SERIAL_PORT_WIN; i++) {
if (is_port_available(i)) {
availablePorts[curIndex] = (char*)malloc(10);
sprintf(availablePorts[curIndex], "COM%d", i);
// printf("found candidate port: %s\n", availablePorts[curIndex]);
curIndex++;
}
availablePorts[i] = NULL;
}
availablePorts[curIndex] = NULL;
return availablePorts;
}