NUC029FAE BSP  V3.01.002
The Board Support Package for NUC029FAE
uart.c
Go to the documentation of this file.
1 /**************************************************************************/
13 #include <stdio.h>
14 #include "NUC029FAE.h"
15 
37 void UART_ClearIntFlag(UART_T* uart, uint32_t u32InterruptFlag)
38 {
39 
40  if(u32InterruptFlag & UART_ISR_RLS_INT_Msk) /* clear Receive Line Status Interrupt */
41  {
42  uart->FSR |= UART_FSR_BIF_Msk | UART_FSR_FEF_Msk | UART_FSR_PEF_Msk;
43  uart->FSR |= UART_FSR_RS485_ADD_DETF_Msk;
44  }
45 
46  if(u32InterruptFlag & UART_ISR_MODEM_INT_Msk) /* clear Modem Interrupt */
47  uart->MSR |= UART_MSR_DCTSF_Msk;
48 
49  if(u32InterruptFlag & UART_ISR_BUF_ERR_INT_Msk) /* clear Buffer Error Interrupt */
50  {
51  uart->FSR |= UART_FSR_RX_OVER_IF_Msk | UART_FSR_TX_OVER_IF_Msk;
52  }
53 
54  if(u32InterruptFlag & UART_ISR_TOUT_INT_Msk) /* clear Modem Interrupt */
55  uart->ISR |= UART_ISR_TOUT_IF_Msk;
56 
57 }
58 
59 
67 void UART_Close(UART_T* uart)
68 {
69  uart->IER = 0;
70 }
71 
72 
81 {
82  uart->IER &= ~(UART_IER_AUTO_RTS_EN_Msk | UART_IER_AUTO_CTS_EN_Msk);
83 }
84 
85 
102 void UART_DisableInt(UART_T* uart, uint32_t u32InterruptFlag )
103 {
104  uart->IER &= ~ u32InterruptFlag;
105 }
106 
107 
108 
117 {
118  uart->MCR |= UART_MCR_LEV_RTS_Msk;
119  uart->MCR &= UART_MCR_RTS_Msk;
120  uart->MSR |= UART_MSR_LEV_CTS_Msk;
121  uart->IER |= UART_IER_AUTO_RTS_EN_Msk | UART_IER_AUTO_CTS_EN_Msk;
122 }
123 
124 
141 void UART_EnableInt(UART_T* uart, uint32_t u32InterruptFlag )
142 {
143  uart->IER |= u32InterruptFlag;
144 }
145 
146 
155 void UART_Open(UART_T* uart, uint32_t u32baudrate)
156 {
157  uint8_t u8UartClkSrcSel;
158  uint32_t u32ClkTbl[4] = {__XTAL, 0, __IRC22M, __IRC22M};
159  uint32_t u32Baud_Div;
160  u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
161 
162  uart->FUN_SEL = UART_FUNC_SEL_UART;
165 
166  if(u32baudrate != 0)
167  {
168  u32Baud_Div = UART_BAUD_MODE2_DIVIDER(u32ClkTbl[u8UartClkSrcSel], u32baudrate);
169 
170  if(u32Baud_Div > 0xFFFF)
171  uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32ClkTbl[u8UartClkSrcSel], u32baudrate));
172  else
173  uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
174  }
175 }
176 
177 
188 uint32_t UART_Read(UART_T* uart, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
189 {
190  uint32_t u32Count, u32delayno;
191 
192  for(u32Count=0; u32Count < u32ReadBytes; u32Count++)
193  {
194  u32delayno = 0;
195 
196  while(uart->FSR & UART_FSR_RX_EMPTY_Msk) /* Check RX empty => failed */
197  {
198  u32delayno++;
199  if( u32delayno >= 0x40000000 )
200  return FALSE;
201  }
202  pu8RxBuf[u32Count] = uart->RBR; /* Get Data from UART RX */
203  }
204 
205  return u32Count;
206 
207 }
208 
209 
222 void UART_SetLine_Config(UART_T* uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
223 {
224  uint8_t u8UartClkSrcSel;
225  uint32_t u32ClkTbl[4] = {__XTAL, 0, __IRC22M, __IRC22M};
226  uint32_t u32Baud_Div = 0;
227  u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
228 
229  if(u32baudrate != 0)
230  {
231  u32Baud_Div = UART_BAUD_MODE2_DIVIDER(u32ClkTbl[u8UartClkSrcSel], u32baudrate);
232 
233  if(u32Baud_Div > 0xFFFF)
234  uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32ClkTbl[u8UartClkSrcSel], u32baudrate));
235  else
236  uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
237  }
238 
239  uart->LCR = u32data_width | u32parity | u32stop_bits;
240 }
241 
242 
251 void UART_SetTimeoutCnt(UART_T* uart, uint32_t u32TOC)
252 {
253  uart->TOR = (uart->TOR & ~UART_TOR_TOIC_Msk)| (u32TOC);
254  uart->IER |= UART_IER_TIME_OUT_EN_Msk;
255 }
256 
257 
267 void UART_SelectIrDAMode(UART_T* uart, uint32_t u32Buadrate, uint32_t u32Direction)
268 {
269  uart->BAUD = UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(12000000, 57600);
270 
271  uart->IRCR &= ~UART_IRCR_INV_TX_Msk;
272  uart->IRCR |= UART_IRCR_INV_RX_Msk;
273  uart->IRCR = u32Direction ? uart->IRCR | UART_IRCR_TX_SELECT_Msk : uart->IRCR &~ UART_IRCR_TX_SELECT_Msk;
274  uart->FUN_SEL = (0x2 << UART_FUN_SEL_FUN_SEL_Pos);
275 }
276 
277 
287 void UART_SelectRS485Mode(UART_T* uart, uint32_t u32Mode, uint32_t u32Addr)
288 {
290  uart->ALT_CSR = 0;
291  uart->ALT_CSR |= u32Mode | (u32Addr << UART_ALT_CSR_ADDR_MATCH_Pos);
292 }
293 
294 
304 uint32_t UART_Write(UART_T* uart,uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
305 {
306  uint32_t u32Count, u32delayno;
307 
308  for(u32Count=0; u32Count != u32WriteBytes; u32Count++)
309  {
310  u32delayno = 0;
311  while((uart->FSR & UART_FSR_TE_FLAG_Msk) == 0) /* Wait Tx empty and Time-out manner */
312  {
313  u32delayno++;
314  if( u32delayno >= 0x40000000 )
315  return FALSE;
316  }
317  uart->THR = pu8TxBuf[u32Count]; /* Send UART Data from buffer */
318  }
319 
320  return u32Count;
321 
322 }
323 
324  /* end of group NUC029FAE_UART_EXPORTED_FUNCTIONS */
326  /* end of group NUC029FAE_UART_Driver */
328  /* end of group NUC029FAE_Device_Driver */
330 
331 /*** (C) COPYRIGHT 2012 Nuvoton Technology Corp. ***/
332 
333 
334 
__IO uint32_t LCR
Definition: NUC029FAE.h:2876
__IO uint32_t TOR
Definition: NUC029FAE.h:2881
#define UART_FCR_RFITL_1BYTE
Definition: uart.h:37
__IO uint32_t FUN_SEL
Definition: NUC029FAE.h:2885
#define UART_BAUD_MODE0_DIVIDER(u32SrcFreq, u32BaudRate)
Calculate UART baudrate mode0 divider.
Definition: uart.h:117
NUC029FAE peripheral access layer header file. This file contains all the peripheral register's defin...
__IO uint32_t MSR
Definition: NUC029FAE.h:2878
#define UART_BAUD_MODE2_DIVIDER(u32SrcFreq, u32BaudRate)
Calculate UART baudrate mode2 divider.
Definition: uart.h:127
void UART_DisableFlowCtrl(UART_T *uart)
The function is used to disable UART auto flow control.
Definition: uart.c:80
void UART_ClearIntFlag(UART_T *uart, uint32_t u32InterruptFlag)
The function is used to clear UART specified interrupt flag.
Definition: uart.c:37
__IO uint32_t ALT_CSR
Definition: NUC029FAE.h:2884
#define UART_PARITY_NONE
Definition: uart.h:55
#define UART_STOP_BIT_1
Definition: uart.h:61
__IO uint32_t FSR
Definition: NUC029FAE.h:2879
__IO uint32_t IER
Definition: NUC029FAE.h:2874
__I uint32_t RBR
Definition: NUC029FAE.h:2871
__IO uint32_t ISR
Definition: NUC029FAE.h:2880
#define UART_FCR_RTS_TRI_LEV_1BYTE
Definition: uart.h:42
void UART_SelectRS485Mode(UART_T *uart, uint32_t u32Mode, uint32_t u32Addr)
The function is used to set RS485 relative setting.
Definition: uart.c:287
void UART_EnableFlowCtrl(UART_T *uart)
The function is used to Enable UART auto flow control.
Definition: uart.c:116
#define UART_BAUD_MODE2
Calculate UART baudrate mode0 divider.
Definition: uart.h:105
uint32_t UART_Write(UART_T *uart, uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
The function is to write data into TX buffer to transmit data by UART.
Definition: uart.c:304
#define __IRC22M
void UART_Close(UART_T *uart)
The function is used to disable UART.
Definition: uart.c:67
void UART_SelectIrDAMode(UART_T *uart, uint32_t u32Buadrate, uint32_t u32Direction)
The function is used to configure IrDA relative settings. It consists of TX or RX mode and baudrate.
Definition: uart.c:267
#define CLK
Pointer to CLK register structure.
Definition: NUC029FAE.h:3228
void UART_SetTimeoutCnt(UART_T *uart, uint32_t u32TOC)
This function use to set Rx timeout count.
Definition: uart.c:251
#define __XTAL
void UART_DisableInt(UART_T *uart, uint32_t u32InterruptFlag)
The function is used to disable UART specified interrupt and disable NVIC UART IRQ.
Definition: uart.c:102
#define UART_BAUD_MODE0
Calculate UART baudrate mode0 divider.
Definition: uart.h:95
__IO uint32_t FCR
Definition: NUC029FAE.h:2875
#define UART_FUNC_SEL_UART
Definition: uart.h:75
#define UART_FUNC_SEL_RS485
Definition: uart.h:77
__IO uint32_t IRCR
Definition: NUC029FAE.h:2883
void UART_EnableInt(UART_T *uart, uint32_t u32InterruptFlag)
The function is used to enable UART specified interrupt and disable NVIC UART IRQ.
Definition: uart.c:141
#define UART_WORD_LEN_8
Definition: uart.h:53
__IO uint32_t MCR
Definition: NUC029FAE.h:2877
__O uint32_t THR
Definition: NUC029FAE.h:2872
void UART_SetLine_Config(UART_T *uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
This function use to config UART line setting.
Definition: uart.c:222
uint32_t UART_Read(UART_T *uart, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
The function is used to read Rx data from RX FIFO and the data will be stored in pu8RxBuf.
Definition: uart.c:188
void UART_Open(UART_T *uart, uint32_t u32baudrate)
This function use to enable UART function and set baud-rate.
Definition: uart.c:155
__IO uint32_t BAUD
Definition: NUC029FAE.h:2882
#define FALSE
Boolean false, define to use in API parameters or return value.
Definition: NUC029FAE.h:3393