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This commit is contained in:
skarg
2007-11-29 15:56:53 +00:00
parent c585241c03
commit 411d6c1b24
236 changed files with 17864 additions and 15724 deletions
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bacnet-stack/ports/win32/rs485.c
+100 -90
View File
@@ -40,7 +40,7 @@
B&B Electronics USOPTL4
SerialGear USB-COMi-SI-M
*/
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
@@ -88,41 +88,44 @@ static DWORD RS485_RTSControl = RTS_CONTROL_DISABLE;
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Set_Interface(char *ifname)
void RS485_Set_Interface(
char *ifname)
{
/* note: expects a constant char, or char from the heap */
RS485_Port_Name = ifname;
}
static void RS485_Print_Error(void)
static void RS485_Print_Error(
void)
{
char * szExtended = ""; /* error string translated from error code */
char *szExtended = ""; /* error string translated from error code */
DWORD dwExtSize;
DWORD dwErr;
dwErr = GetLastError();
fprintf(stderr,"Error %lu:\r\n", dwErr);
fprintf(stderr, "Error %lu:\r\n", dwErr);
/* Get error string from system */
dwExtSize = FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER | 80 ,
NULL, dwErr,
MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
(LPTSTR) szExtended, 0, NULL);
fprintf(stderr,"%s\r\n", szExtended);
dwExtSize =
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_ALLOCATE_BUFFER | 80, NULL, dwErr,
MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), (LPTSTR) szExtended, 0,
NULL);
fprintf(stderr, "%s\r\n", szExtended);
return;
}
static void RS485_Configure_Status(void)
static void RS485_Configure_Status(
void)
{
DCB dcb = {0};
DCB dcb = { 0 };
COMMTIMEOUTS ctNew;
dcb.DCBlength = sizeof(dcb);
/* get current DCB settings */
if (!GetCommState(RS485_Handle, &dcb)) {
fprintf(stderr,"Unable to get status from %s\n", RS485_Port_Name);
fprintf(stderr, "Unable to get status from %s\n", RS485_Port_Name);
RS485_Print_Error();
exit(1);
}
@@ -130,49 +133,49 @@ static void RS485_Configure_Status(void)
/* update DCB rate, byte size, parity, and stop bits size */
dcb.BaudRate = RS485_Baud;
dcb.ByteSize = RS485_ByteSize;
dcb.Parity = RS485_Parity;
dcb.Parity = RS485_Parity;
dcb.StopBits = RS485_StopBits;
/* update flow control settings */
dcb.fDtrControl = RS485_DTRControl;
dcb.fRtsControl = RS485_RTSControl;
dcb.fDtrControl = RS485_DTRControl;
dcb.fRtsControl = RS485_RTSControl;
/*
dcb.fOutxCtsFlow = CTSOUTFLOW(TTYInfo);
dcb.fOutxDsrFlow = DSROUTFLOW(TTYInfo);
dcb.fDsrSensitivity = DSRINFLOW(TTYInfo);
dcb.fOutX = XONXOFFOUTFLOW(TTYInfo);
dcb.fInX = XONXOFFINFLOW(TTYInfo);
dcb.fTXContinueOnXoff = TXAFTERXOFFSENT(TTYInfo);
dcb.XonChar = XONCHAR(TTYInfo);
dcb.XoffChar = XOFFCHAR(TTYInfo);
dcb.XonLim = XONLIMIT(TTYInfo);
dcb.XoffLim = XOFFLIMIT(TTYInfo);
// DCB settings not in the user's control
dcb.fParity = TRUE;
*/
dcb.fOutxCtsFlow = CTSOUTFLOW(TTYInfo);
dcb.fOutxDsrFlow = DSROUTFLOW(TTYInfo);
dcb.fDsrSensitivity = DSRINFLOW(TTYInfo);
dcb.fOutX = XONXOFFOUTFLOW(TTYInfo);
dcb.fInX = XONXOFFINFLOW(TTYInfo);
dcb.fTXContinueOnXoff = TXAFTERXOFFSENT(TTYInfo);
dcb.XonChar = XONCHAR(TTYInfo);
dcb.XoffChar = XOFFCHAR(TTYInfo);
dcb.XonLim = XONLIMIT(TTYInfo);
dcb.XoffLim = XOFFLIMIT(TTYInfo);
// DCB settings not in the user's control
dcb.fParity = TRUE;
*/
if (!SetCommState(RS485_Handle, &dcb)) {
fprintf(stderr,"Unable to set status on %s\n", RS485_Port_Name);
fprintf(stderr, "Unable to set status on %s\n", RS485_Port_Name);
RS485_Print_Error();
}
/* configure the COM port timeout values */
ctNew.ReadIntervalTimeout = MAXDWORD;
ctNew.ReadTotalTimeoutMultiplier = MAXDWORD;
ctNew.ReadTotalTimeoutConstant = 1000;
ctNew.ReadIntervalTimeout = MAXDWORD;
ctNew.ReadTotalTimeoutMultiplier = MAXDWORD;
ctNew.ReadTotalTimeoutConstant = 1000;
ctNew.WriteTotalTimeoutMultiplier = 0;
ctNew.WriteTotalTimeoutConstant = 0;
ctNew.WriteTotalTimeoutConstant = 0;
if (!SetCommTimeouts(RS485_Handle, &ctNew)) {
RS485_Print_Error();
}
/* Get rid of any stray characters */
if (!PurgeComm(RS485_Handle, PURGE_TXABORT | PURGE_RXABORT)) {
fprintf(stderr,"Unable to purge %s\n", RS485_Port_Name);
fprintf(stderr, "Unable to purge %s\n", RS485_Port_Name);
RS485_Print_Error();
}
/* Set the Comm buffer size */
SetupComm(RS485_Handle, MAX_MPDU, MAX_MPDU);
/* raise DTR */
if (!EscapeCommFunction(RS485_Handle, SETDTR)) {
fprintf(stderr,"Unable to set DTR on %s\n", RS485_Port_Name);
fprintf(stderr, "Unable to set DTR on %s\n", RS485_Port_Name);
RS485_Print_Error();
}
}
@@ -184,22 +187,19 @@ static void RS485_Configure_Status(void)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Initialize(void)
void RS485_Initialize(
void)
{
RS485_Handle = CreateFile(
RS485_Port_Name,
GENERIC_READ | GENERIC_WRITE,
0,
0,
OPEN_EXISTING,
/*FILE_FLAG_OVERLAPPED*/0,
RS485_Handle = CreateFile(RS485_Port_Name,
GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING,
/*FILE_FLAG_OVERLAPPED */ 0,
0);
if (RS485_Handle == INVALID_HANDLE_VALUE) {
fprintf(stderr,"Unable to open %s\n", RS485_Port_Name);
fprintf(stderr, "Unable to open %s\n", RS485_Port_Name);
RS485_Print_Error();
exit(1);
}
if (!GetCommTimeouts( RS485_Handle, &RS485_Timeouts)) {
if (!GetCommTimeouts(RS485_Handle, &RS485_Timeouts)) {
RS485_Print_Error();
}
RS485_Configure_Status();
@@ -207,13 +207,14 @@ void RS485_Initialize(void)
return;
}
void RS485_Cleanup(void)
void RS485_Cleanup(
void)
{
if (!EscapeCommFunction(RS485_Handle, CLRDTR)) {
RS485_Print_Error();
}
if (!SetCommTimeouts(RS485_Handle, &RS485_Timeouts)) {
if (!SetCommTimeouts(RS485_Handle, &RS485_Timeouts)) {
RS485_Print_Error();
}
@@ -226,15 +227,21 @@ void RS485_Cleanup(void)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
uint32_t RS485_Get_Baud_Rate(void)
uint32_t RS485_Get_Baud_Rate(
void)
{
switch (RS485_Baud) {
case CBR_19200: return 19200;
case CBR_38400: return 38400;
case CBR_57600: return 57600;
case CBR_115200: return 115200;
case CBR_19200:
return 19200;
case CBR_38400:
return 38400;
case CBR_57600:
return 57600;
case CBR_115200:
return 115200;
default:
case CBR_9600: return 9600;
case CBR_9600:
return 9600;
}
}
@@ -244,29 +251,30 @@ uint32_t RS485_Get_Baud_Rate(void)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
bool RS485_Set_Baud_Rate(uint32_t baud)
bool RS485_Set_Baud_Rate(
uint32_t baud)
{
bool valid = true;
switch (baud) {
case 9600:
RS485_Baud = CBR_9600;
break;
case 19200:
RS485_Baud = CBR_19200;
break;
case 38400:
RS485_Baud = CBR_38400;
break;
case 57600:
RS485_Baud = CBR_57600;
break;
case 115200:
RS485_Baud = CBR_115200;
break;
default:
valid = false;
break;
case 9600:
RS485_Baud = CBR_9600;
break;
case 19200:
RS485_Baud = CBR_19200;
break;
case 38400:
RS485_Baud = CBR_38400;
break;
case 57600:
RS485_Baud = CBR_57600;
break;
case 115200:
RS485_Baud = CBR_115200;
break;
default:
valid = false;
break;
}
if (valid) {
@@ -278,11 +286,11 @@ bool RS485_Set_Baud_Rate(uint32_t baud)
/* Transmits a Frame on the wire */
void RS485_Send_Frame(
volatile struct mstp_port_struct_t *mstp_port, /* port specific data */
uint8_t * buffer, /* frame to send (up to 501 bytes of data) */
uint16_t nbytes) /* number of bytes of data (up to 501) */
{
DWORD dwWritten = 0;
volatile struct mstp_port_struct_t *mstp_port, /* port specific data */
uint8_t * buffer, /* frame to send (up to 501 bytes of data) */
uint16_t nbytes)
{ /* number of bytes of data (up to 501) */
DWORD dwWritten = 0;
if (mstp_port) {
uint32_t baud;
@@ -310,7 +318,8 @@ void RS485_Send_Frame(
}
/* called by timer, interrupt(?) or other thread */
void RS485_Check_UART_Data(volatile struct mstp_port_struct_t *mstp_port)
void RS485_Check_UART_Data(
volatile struct mstp_port_struct_t *mstp_port)
{
char lpBuf[1];
DWORD dwRead = 0;
@@ -322,7 +331,7 @@ void RS485_Check_UART_Data(volatile struct mstp_port_struct_t *mstp_port)
else if (mstp_port->DataAvailable == false) {
/* check for data */
if (!ReadFile(RS485_Handle, lpBuf, sizeof(lpBuf), &dwRead, NULL)) {
if (GetLastError() != ERROR_IO_PENDING) {
if (GetLastError() != ERROR_IO_PENDING) {
mstp_port->ReceiveError = TRUE;
}
} else {
@@ -335,10 +344,11 @@ void RS485_Check_UART_Data(volatile struct mstp_port_struct_t *mstp_port)
}
#ifdef TEST_RS485
static void test_transmit_task(void *pArg)
static void test_transmit_task(
void *pArg)
{
char *TxBuf = "BACnet MS/TP";
size_t len = strlen(TxBuf)+1;
size_t len = strlen(TxBuf) + 1;
while (TRUE) {
Sleep(1000);
@@ -346,7 +356,8 @@ static void test_transmit_task(void *pArg)
}
}
int main(void)
int main(
void)
{
unsigned long hThread = 0;
uint32_t arg_value = 0;
@@ -357,13 +368,13 @@ int main(void)
RS485_Set_Interface("COM4");
RS485_Set_Baud_Rate(38400);
RS485_Initialize();
#if 0
#if 0
/* create a task for synchronous transmit */
hThread = _beginthread(test_transmit_task,4096,&arg_value);
hThread = _beginthread(test_transmit_task, 4096, &arg_value);
if (hThread == 0) {
fprintf(stderr, "Failed to start transmit task\n");
}
#endif
#endif
/* receive task */
for (;;) {
if (!ReadFile(RS485_Handle, lpBuf, sizeof(lpBuf), &dwRead, NULL)) {
@@ -374,12 +385,11 @@ int main(void)
/* print any characters received */
if (dwRead) {
for (i = 0; i < dwRead; i++) {
fprintf(stderr,"%02X ",lpBuf[i]);
fprintf(stderr, "%02X ", lpBuf[i]);
}
}
dwRead = 0;
}
}
}
#endif /* TEST_ABORT */
#endif /* TEST_ABORT */