/*----------------------------------------------------------------------------
Serial Device "LPC17xx"
initialize
*----------------------------------------------------------------------------*/
static int UartDev_Init (void) {
int i;
if (UARTInfo.State != _STATE_UNKNOWN_) {
return (-1); /* Device initialized */
}
ConfigureUart (&UART_DEV.Cfg);
ConfigurePins (); /* Re-configure the UART pins */
__BUF_RESET(BufTx); /* reset transmit buffer */
__BUF_RESET(BufRx); /* reset receive buffer */
TxRestart = 1;
UARTInfo.State = _STATE_INITIALIZED_;
UART_TxCmd (UARTInfo.pUart, ENABLE); /* TX, RX enable */
for (i = 0; i < 800; i++); /* eleminate schmierzeichen */
/* Setting up callback function for UART driver */
// Receive callback
UART_SetupCbs(UARTInfo.pUart, 0, (void *)UartRxCallBack);
// Transmit callback
UART_SetupCbs(UARTInfo.pUart, 1, (void *)UartTxCallBack);
/* Enable Rx Interrrupt in UART peripheral */
UART_IntConfig(UARTInfo.pUart, UART_INTCFG_RBR, ENABLE);
/* preemption = 1, sub-priority = 1 */
NVIC_SetPriority(UARTInfo.UARTIRQn, ((0x01<<3)|0x01));
NVIC_EnableIRQ(UARTInfo.UARTIRQn); /* enable Interrupt */
return(0); /* success */
}
/*********************************************************************//**
* @brief Main UART testing example sub-routine
* Print welcome screen first, then press any key to have it
* read in from the terminal and returned back to the terminal.
* - Press ESC to exit
* - Press 'r' to print welcome screen menu again
**********************************************************************/
int c_entry(void)
{
// UART Configuration structure variable
UART_CFG_Type UARTConfigStruct;
// UART FIFO configuration Struct variable
UART_FIFO_CFG_Type UARTFIFOConfigStruct;
// Pin configuration for UART0
PINSEL_CFG_Type PinCfg;
uint32_t idx, len;
__IO FlagStatus exitflag;
uint8_t buffer[10];
// DeInit NVIC and SCBNVIC
NVIC_DeInit();
NVIC_SCBDeInit();
/* Configure the NVIC Preemption Priority Bits:
* two (2) bits of preemption priority, six (6) bits of sub-priority.
* Since the Number of Bits used for Priority Levels is five (5), so the
* actual bit number of sub-priority is three (3)
*/
NVIC_SetPriorityGrouping(0x05);
// Set Vector table offset value
#if (__RAM_MODE__==1)
NVIC_SetVTOR(0x10000000);
#else
NVIC_SetVTOR(0x00000000);
#endif
/*
* Initialize UART1 pin connect
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Portnum = 0;
for (idx = 15; idx <= 22; idx++){
PinCfg.Pinnum = idx;
PINSEL_ConfigPin(&PinCfg);
}
/* Initialize UART Configuration parameter structure to default state:
* Baudrate = 9600bps
* 8 data bit
* 1 Stop bit
* None parity
*/
UART_ConfigStructInit(&UARTConfigStruct);
// Initialize UART1 peripheral with given to corresponding parameter
UART_Init((LPC_UART_TypeDef *)LPC_UART1, &UARTConfigStruct);
/* Initialize FIFOConfigStruct to default state:
* - FIFO_DMAMode = DISABLE
* - FIFO_Level = UART_FIFO_TRGLEV0
* - FIFO_ResetRxBuf = ENABLE
* - FIFO_ResetTxBuf = ENABLE
* - FIFO_State = ENABLE
*/
UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
// Initialize FIFO for UART1 peripheral
UART_FIFOConfig((LPC_UART_TypeDef *)LPC_UART1, &UARTFIFOConfigStruct);
#if (AUTO_RTS_CTS_USE==0)
/*
* Determine current state of CTS pin to enable Tx
* activity
*/
if (UART_FullModemGetStatus(LPC_UART1) & UART1_MODEM_STAT_CTS) {
// Enable UART Transmit
UART_TxCmd((LPC_UART_TypeDef *)LPC_UART1, ENABLE);
}
#else
// Enable UART Transmit
UART_TxCmd((UART_TypeDef *)UART1, ENABLE);
#endif
// Reset ring buf head and tail idx
__BUF_RESET(rb.rx_head);
__BUF_RESET(rb.rx_tail);
__BUF_RESET(rb.tx_head);
__BUF_RESET(rb.tx_tail);
#if AUTO_RTS_CTS_USE
UART_FullModemConfigMode(UART1, UART1_MODEM_MODE_AUTO_RTS, ENABLE);
UART_FullModemConfigMode(UART1, UART1_MODEM_MODE_AUTO_CTS, ENABLE);
#else
// Enable Modem status interrupt
UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART1_INTCFG_MS, ENABLE);
// Enable CTS1 signal transition interrupt
UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART1_INTCFG_CTS, ENABLE);
// Modem Status interrupt call back
UART_SetupCbs((LPC_UART_TypeDef *)LPC_UART1, 4, (void *)UART1_ModemCallBack);
// Force RTS pin state to ACTIVE
UART_FullModemForcePinState(LPC_UART1, UART1_MODEM_PIN_RTS, ACTIVE);
//RESET RTS State flag
RTS_State = ACTIVE;
#endif
// Setup callback ---------------
// Receive callback
UART_SetupCbs((LPC_UART_TypeDef *)LPC_UART1, 0, (void *)UART1_IntReceive);
// Transmit callback
UART_SetupCbs((LPC_UART_TypeDef *)LPC_UART1, 1, (void *)UART1_IntTransmit);
// Line Status Error callback
UART_SetupCbs((LPC_UART_TypeDef *)LPC_UART1, 3, (void *)UART1_IntErr);
/* Enable UART Rx interrupt */
UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART_INTCFG_RBR, ENABLE);
/* Enable UART line status interrupt */
UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART_INTCFG_RLS, ENABLE);
/*
* Do not enable transmit interrupt here, since it is handled by
* UART_Send() function, just to reset Tx Interrupt state for the
* first time
*/
TxIntStat = RESET;
/* preemption = 1, sub-priority = 1 */
NVIC_SetPriority(UART1_IRQn, ((0x01<<3)|0x01));
/* Enable Interrupt for UART1 channel */
NVIC_EnableIRQ(UART1_IRQn);
// print welcome screen
print_menu();
// reset exit flag
exitflag = RESET;
/* Read some data from the buffer */
while (exitflag == RESET)
{
len = 0;
while (len == 0)
{
len = UARTReceive((LPC_UART_TypeDef *)LPC_UART1, buffer, sizeof(buffer));
}
/* Got some data */
idx = 0;
while (idx < len)
{
if (buffer[idx] == 27)
{
/* ESC key, set exit flag */
UARTSend((LPC_UART_TypeDef *)LPC_UART1, menu3, sizeof(menu3));
exitflag = SET;
}
else if (buffer[idx] == 'r')
{
print_menu();
}
else
{
/* Echo it back */
UARTSend((LPC_UART_TypeDef *)LPC_UART1, &buffer[idx], 1);
}
idx++;
}
}
// wait for current transmission complete - THR must be empty
while (UART_CheckBusy((LPC_UART_TypeDef *)LPC_UART1) == SET);
// DeInitialize UART1 peripheral
UART_DeInit((LPC_UART_TypeDef *)LPC_UART1);
/* Loop forever */
while(1);
return 1;
}
/*********************************************************************//**
* @brief Main UART testing example sub-routine
* Print welcome screen first, then press any key to have it
* read in from the terminal and returned back to the terminal.
* - Press ESC to exit
* - Press 'r' to print welcome screen menu again
**********************************************************************/
int c_entry(void)
{
// UART Configuration structure variable
UART_CFG_Type UARTConfigStruct;
// UART FIFO configuration Struct variable
UART_FIFO_CFG_Type UARTFIFOConfigStruct;
// Pin configuration
PINSEL_CFG_Type PinCfg;
// RS485 configuration
UART1_RS485_CTRLCFG_Type rs485cfg;
// Temp. data
uint32_t idx, len;
uint8_t buffer[10];
int32_t exit_flag, addr_toggle;
// DeInit NVIC and SCBNVIC
NVIC_DeInit();
NVIC_SCBDeInit();
/* Configure the NVIC Preemption Priority Bits:
* two (2) bits of preemption priority, six (6) bits of sub-priority.
* Since the Number of Bits used for Priority Levels is five (5), so the
* actual bit number of sub-priority is three (3)
*/
NVIC_SetPriorityGrouping(0x05);
// Set Vector table offset value
#if (__RAM_MODE__==1)
NVIC_SetVTOR(0x10000000);
#else
NVIC_SetVTOR(0x00000000);
#endif
// UART0 section ----------------------------------------------------
/*
* Initialize UART0 pin connect
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 2;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 3;
PINSEL_ConfigPin(&PinCfg);
/* Initialize UART Configuration parameter structure to default state:
* Baudrate = 115200 bps
* 8 data bit
* 1 Stop bit
* None parity
*/
UART_ConfigStructInit(&UARTConfigStruct);
UARTConfigStruct.Baud_rate = 115200;
// Initialize UART0 peripheral with given to corresponding parameter
UART_Init(LPC_UART0, &UARTConfigStruct);
/* Initialize FIFOConfigStruct to default state:
* - FIFO_DMAMode = DISABLE
* - FIFO_Level = UART_FIFO_TRGLEV0
* - FIFO_ResetRxBuf = ENABLE
* - FIFO_ResetTxBuf = ENABLE
* - FIFO_State = ENABLE
*/
UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
// Initialize FIFO for UART0 peripheral
UART_FIFOConfig(LPC_UART0, &UARTFIFOConfigStruct);
// Enable UART Transmit
UART_TxCmd(LPC_UART0, ENABLE);
// print welcome screen
print_menu();
// UART1 - RS485 section -------------------------------------------------
/*
* Initialize UART1 pin connect
*/
PinCfg.Funcnum = 2;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
// TXD1 - P2.0
PinCfg.Pinnum = 0;
PinCfg.Portnum = 2;
PINSEL_ConfigPin(&PinCfg);
// RXD1 - P2.1
PinCfg.Pinnum = 1;
PINSEL_ConfigPin(&PinCfg);
// DTR1 - P2.5
PinCfg.Pinnum = 5;
PINSEL_ConfigPin(&PinCfg);
/* Initialize UART Configuration parameter structure to default state:
* Baudrate = 9600 bps
* 8 data bit
* 1 Stop bit
* Parity: None
* Note: Parity will be enabled later in UART_RS485Config() function.
*/
UART_ConfigStructInit(&UARTConfigStruct);
// Initialize UART0 peripheral with given to corresponding parameter
UART_Init((LPC_UART_TypeDef *)LPC_UART1, &UARTConfigStruct);
/* Initialize FIFOConfigStruct to default state:
* - FIFO_DMAMode = DISABLE
* - FIFO_Level = UART_FIFO_TRGLEV0
* - FIFO_ResetRxBuf = ENABLE
* - FIFO_ResetTxBuf = ENABLE
* - FIFO_State = ENABLE
*/
UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
// Initialize FIFO for UART0 peripheral
UART_FIFOConfig((LPC_UART_TypeDef *)LPC_UART1, &UARTFIFOConfigStruct);
// Configure RS485
/*
* - Auto Direction in Tx/Rx driving is enabled
* - Direction control pin is set to DTR1
* - Direction control pole is set to "1" that means direction pin
* will drive to high state before transmit data.
* - Multidrop mode is disable
* - Auto detect address is disabled
* - Receive state is enable
*/
rs485cfg.AutoDirCtrl_State = ENABLE;
rs485cfg.DirCtrlPin = UART1_RS485_DIRCTRL_DTR;
rs485cfg.DirCtrlPol_Level = SET;
rs485cfg.DelayValue = 50;
rs485cfg.NormalMultiDropMode_State = DISABLE;
rs485cfg.AutoAddrDetect_State = DISABLE;
rs485cfg.MatchAddrValue = 0;
rs485cfg.Rx_State = ENABLE;
UART_RS485Config(LPC_UART1, &rs485cfg);
// Setup callback ---------------
// Receive callback
UART_SetupCbs((LPC_UART_TypeDef *)LPC_UART1, 0, (void *)UART_IntReceive);
// Line Status Error callback
UART_SetupCbs((LPC_UART_TypeDef *)LPC_UART1, 3, (void *)UART_IntErr);
/* Enable UART Rx interrupt */
UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART_INTCFG_RBR, ENABLE);
/* Enable UART line status interrupt */
UART_IntConfig((LPC_UART_TypeDef *)LPC_UART1, UART_INTCFG_RLS, ENABLE);
/* preemption = 1, sub-priority = 1 */
NVIC_SetPriority(UART1_IRQn, ((0x01<<3)|0x01));
/* Enable Interrupt for UART0 channel */
NVIC_EnableIRQ(UART1_IRQn);
// Enable UART Transmit
UART_TxCmd((LPC_UART_TypeDef *)LPC_UART1, ENABLE);
addr_toggle = 1;
// for testing...
while (1){
// Send slave addr -----------------------------------------
UART_Send(LPC_UART0, send_menu, sizeof(send_menu), BLOCKING);
// Send slave addr on RS485 bus
if (addr_toggle){
UART_RS485SendSlvAddr(LPC_UART1, SLAVE_ADDR_A);
} else {
UART_RS485SendSlvAddr(LPC_UART1, SLAVE_ADDR_B);
}
// delay for a while
for (len = 0; len < 1000; len++);
// Send data -----------------------------------------------
if (addr_toggle){
UART_RS485SendData(LPC_UART1, slaveA_msg, sizeof(slaveA_msg));
} else {
UART_RS485SendData(LPC_UART1, slaveB_msg, sizeof(slaveB_msg));
}
// Send terminator
UART_RS485SendData(LPC_UART1, &terminator, 1);
// delay for a while
for (len = 0; len < 1000; len++);
// Receive data from slave --------------------------------
UART_Send(LPC_UART0, recv_menu, sizeof(recv_menu), BLOCKING);
// If address 'A' required response...
if (addr_toggle){
exit_flag = 0;
while (!exit_flag){
len = UARTReceive((LPC_UART_TypeDef *)LPC_UART1, buffer, sizeof(buffer));
/* Got some data */
idx = 0;
while (idx < len)
{
if (buffer[idx] == 13){
exit_flag = 1;
} else {
/* Echo it back */
UART_Send(LPC_UART0, &buffer[idx], 1, BLOCKING);
}
idx++;
}
}
}
UART_Send(LPC_UART0, nextline, sizeof(nextline), BLOCKING);
addr_toggle = (addr_toggle ? 0 : 1);
// long delay here
for (len = 0; len < 10000000; len++);
}
return 1;
}
/*********************************************************************//**
* @brief UART init sub-routine
**********************************************************************/
static int uart_init_intern(void)
{
// UART Configuration structure variable
UART_CFG_Type UARTConfigStruct;
// UART FIFO configuration Struct variable
UART_FIFO_CFG_Type UARTFIFOConfigStruct;
// Pin configuration for UART0
PINSEL_CFG_Type PinCfg;
#if (UART_PORT == 0)
/*
* Initialize UART0 pin connect
*/
PinCfg.Funcnum = 1;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 2;
PinCfg.Portnum = 0;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 3;
PINSEL_ConfigPin(&PinCfg);
#endif
#if (UART_PORT == 1)
/*
* Initialize UART1 pin connect
*/
PinCfg.Funcnum = 2;
PinCfg.OpenDrain = 0;
PinCfg.Pinmode = 0;
PinCfg.Pinnum = 0;
PinCfg.Portnum = 2;
PINSEL_ConfigPin(&PinCfg);
PinCfg.Pinnum = 1;
PINSEL_ConfigPin(&PinCfg);
#endif
/* Initialize UART Configuration parameter structure to default state:
* Baudrate = 9600bps
* 8 data bit
* 1 Stop bit
* None parity
*/
UART_ConfigStructInit(&UARTConfigStruct);
// Re-configure baud-rate to 115200bps
UARTConfigStruct.Baud_rate = 115200;
// Initialize UART0 peripheral with given to corresponding parameter
UART_Init(TEST_UART, &UARTConfigStruct);
/* Initialize FIFOConfigStruct to default state:
* - FIFO_DMAMode = DISABLE
* - FIFO_Level = UART_FIFO_TRGLEV0
* - FIFO_ResetRxBuf = ENABLE
* - FIFO_ResetTxBuf = ENABLE
* - FIFO_State = ENABLE
*/
UART_FIFOConfigStructInit(&UARTFIFOConfigStruct);
// Initialize FIFO for UART0 peripheral
UART_FIFOConfig(TEST_UART, &UARTFIFOConfigStruct);
// Setup callback ---------------
// Receive callback
UART_SetupCbs(TEST_UART, 0, (void *) UART_IntReceive);
// Transmit callback
UART_SetupCbs(TEST_UART, 1, (void *) UART_IntTransmit);
// Line Status Error callback
UART_SetupCbs(TEST_UART, 3, (void *) UART_IntErr);
// Enable UART Transmit
UART_TxCmd(TEST_UART, ENABLE);
/* Enable UART Rx interrupt */
UART_IntConfig(TEST_UART, UART_INTCFG_RBR, ENABLE);
/* Enable UART line status interrupt */
UART_IntConfig(TEST_UART, UART_INTCFG_RLS, ENABLE);
/*
* Do not enable transmit interrupt here, since it is handled by
* UART_Send() function, just to reset Tx Interrupt state for the
* first time
*/
TxIntStat = RESET;
// Reset ring buf head and tail idx
__BUF_RESET(rb.rx_head);
__BUF_RESET(rb.rx_tail);
__BUF_RESET(rb.tx_head);
__BUF_RESET(rb.tx_tail);
#if (UART_PORT == 0)
/* preemption = 1, sub-priority = 1 */
NVIC_SetPriority(UART0_IRQn, ((0x01 << 3) | 0x01));
/* Enable Interrupt for UART0 channel */
NVIC_EnableIRQ(UART0_IRQn);
#endif
#if (UART_PORT == 1)
/* preemption = 1, sub-priority = 1 */
NVIC_SetPriority(UART1_IRQn, ((0x01<<3)|0x01));
/* Enable Interrupt for UART0 channel */
NVIC_EnableIRQ(UART1_IRQn);
#endif
return 0;
}
