dali/bacnet_stack
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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/pic18f6720/rs485.c
+65 -56
View File
@@ -57,11 +57,12 @@ volatile uint8_t RS485_Tx_Buffer[MAX_MPDU];
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
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) */
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) */
uint16_t i = 0; /* loop counter */
{ /* number of bytes of data (up to 501) */
uint16_t i = 0; /* loop counter */
uint8_t turnaround_time;
if (!buffer)
@@ -117,8 +118,8 @@ void RS485_Send_Frame(volatile struct mstp_port_struct_t *mstp_port, /* port
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
uint8_t RS485_Check_UART_Data(volatile struct mstp_port_struct_t *
mstp_port)
uint8_t RS485_Check_UART_Data(
volatile struct mstp_port_struct_t * mstp_port)
{
/* check for data */
if (RS485_Comstat.Rx_Bytes) {
@@ -151,7 +152,8 @@ uint8_t RS485_Check_UART_Data(volatile struct mstp_port_struct_t *
NOTES: none
*************************************************************************** */
void RS485_Interrupt_Rx(void)
void RS485_Interrupt_Rx(
void)
{
char dummy;
@@ -184,7 +186,8 @@ void RS485_Interrupt_Rx(void)
NOTES: none
*************************************************************************** */
void RS485_Interrupt_Tx(void)
void RS485_Interrupt_Tx(
void)
{
if (RS485_Comstat.Tx_Bytes) {
/* Get the data byte */
@@ -214,7 +217,8 @@ void RS485_Interrupt_Tx(void)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
uint32_t RS485_Get_Baud_Rate(void)
uint32_t RS485_Get_Baud_Rate(
void)
{
return RS485_Baud_Rate;
}
@@ -225,22 +229,23 @@ 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:
case 19200:
case 38400:
case 57600:
case 76800:
case 115200:
RS485_Baud_Rate = baud;
break;
default:
valid = false;
break;
case 9600:
case 19200:
case 38400:
case 57600:
case 76800:
case 115200:
RS485_Baud_Rate = baud;
break;
default:
valid = false;
break;
}
if (valid) {
@@ -262,7 +267,8 @@ bool RS485_Set_Baud_Rate(uint32_t baud)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Initialize_Port(void)
void RS485_Initialize_Port(
void)
{
/* Reset USART registers to POR state */
@@ -292,35 +298,35 @@ void RS485_Initialize_Port(void)
1250000 0
*/
switch (RS485_Baud_Rate) {
case 19200:
SPBRG2 = 64;
TXSTA2bits.BRGH = 1;
break;
case 38400:
SPBRG2 = 32;
TXSTA2bits.BRGH = 1;
break;
case 57600:
SPBRG2 = 21;
TXSTA2bits.BRGH = 1;
break;
case 76800:
SPBRG2 = 3;
TXSTA2bits.BRGH = 0;
break;
case 115200:
SPBRG2 = 10;
TXSTA2bits.BRGH = 1;
break;
case 9600:
SPBRG2 = 129;
TXSTA2bits.BRGH = 1;
break;
default:
SPBRG2 = 129;
TXSTA2bits.BRGH = 1;
RS485_Set_Baud_Rate(9600);
break;
case 19200:
SPBRG2 = 64;
TXSTA2bits.BRGH = 1;
break;
case 38400:
SPBRG2 = 32;
TXSTA2bits.BRGH = 1;
break;
case 57600:
SPBRG2 = 21;
TXSTA2bits.BRGH = 1;
break;
case 76800:
SPBRG2 = 3;
TXSTA2bits.BRGH = 0;
break;
case 115200:
SPBRG2 = 10;
TXSTA2bits.BRGH = 1;
break;
case 9600:
SPBRG2 = 129;
TXSTA2bits.BRGH = 1;
break;
default:
SPBRG2 = 129;
TXSTA2bits.BRGH = 1;
RS485_Set_Baud_Rate(9600);
break;
}
/* select async mode */
TXSTA2bits.SYNC = 0;
@@ -341,14 +347,16 @@ void RS485_Initialize_Port(void)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Disable_Port(void)
void RS485_Disable_Port(
void)
{
RCSTA2 &= 0x4F; /* Disable the receiver */
RCSTA2 &= 0x4F; /* Disable the receiver */
TXSTA2bits.TXEN = 0; /* and transmitter */
PIE3 &= 0xCF; /* Disable both interrupts */
PIE3 &= 0xCF; /* Disable both interrupts */
}
void RS485_Reinit(void)
void RS485_Reinit(
void)
{
RS485_Set_Baud_Rate(38400);
}
@@ -359,7 +367,8 @@ void RS485_Reinit(void)
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Initialize(void)
void RS485_Initialize(
void)
{
/* Init the Rs485 buffers */
RS485_Comstat.RxHead = 0;