| NANO100_BSP V3.05.000 The Board Support Package for Nano100BN Series

uart.c
Go to the documentation of this file.
1/**************************************************************************/
13#include <stdio.h>
14#include "Nano100Series.h"
15
29 extern uint32_t SysGet_PLLClockFreq(void);
31
32
41 void UART_ClearIntFlag(UART_T* uart, uint32_t u32InterruptFlag)
42{
43
44 if(u32InterruptFlag & UART_ISR_RLS_IS_Msk) /* clear Receive Line Status Interrupt */
45 {
46 uart->FSR |= UART_FSR_BI_F_Msk | UART_FSR_FE_F_Msk | UART_FSR_PE_F_Msk;
47 uart->TRSR |= UART_TRSR_RS485_ADDET_F_Msk;
48 }
49
50 if(u32InterruptFlag & UART_ISR_MODEM_IS_Msk) /* clear Modem Interrupt */
51 uart->MCSR |= UART_MCSR_DCT_F_Msk;
52
53 if(u32InterruptFlag & UART_ISR_BUF_ERR_IS_Msk) /* clear Buffer Error Interrupt */
54 {
55 uart->FSR |= UART_FSR_RX_OVER_F_Msk | UART_FSR_TX_OVER_F_Msk;
56 }
57
58 if(u32InterruptFlag & UART_ISR_WAKE_IS_Msk) /* clear wake up Interrupt */
59 {
60 uart->ISR |= UART_ISR_WAKE_IS_Msk;
61 }
62
63 if(u32InterruptFlag & UART_ISR_ABAUD_IS_Msk) /* clear auto-baud rate Interrupt */
64 {
65 uart->TRSR |= UART_TRSR_ABAUD_TOUT_F_Msk | UART_TRSR_ABAUD_F_Msk;
66 }
67
68 if(u32InterruptFlag & UART_ISR_LIN_IS_Msk) /* clear LIN break Interrupt */
69 {
70 uart->TRSR |= UART_TRSR_LIN_TX_F_Msk | UART_TRSR_LIN_RX_F_Msk | UART_TRSR_BIT_ERR_F_Msk;
71 }
72
73}
74
75
83 void UART_Close(UART_T* uart)
84{
85 uart->IER = 0;
86}
87
88
96 void UART_DisableFlowCtrl(UART_T* uart)
97{
98 uart->CTL &= ~(UART_CTL_AUTO_RTS_EN_Msk | UART_CTL_AUTO_CTS_EN_Msk);
99}
100
101
120 void UART_DisableInt(UART_T* uart, uint32_t u32InterruptFlag )
121{
122 uart->IER &= ~ u32InterruptFlag;
123}
124
125
126
134 void UART_EnableFlowCtrl(UART_T* uart )
135{
136 uart->MCSR |= UART_MCSR_LEV_RTS_Msk | UART_MCSR_LEV_CTS_Msk;
137 uart->CTL |= UART_CTL_AUTO_RTS_EN_Msk | UART_CTL_AUTO_CTS_EN_Msk;
138}
139
140
159 void UART_EnableInt(UART_T* uart, uint32_t u32InterruptFlag )
160{
161 uart->IER |= u32InterruptFlag;
162}
163
164
173 void UART_Open(UART_T* uart, uint32_t u32baudrate)
174{
175 uint8_t u8UartClkSrcSel;
176 uint32_t u32ClkTbl[4] = {__HXT, __LXT, 0, __HIRC12M};
177 uint32_t u32Baud_Div;
178 uint32_t u32SrcFreq;
179 uint32_t u32SrcFreqDiv;
180
181 u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
182
183 u32SrcFreq = u32ClkTbl[u8UartClkSrcSel];
184
185 u32SrcFreqDiv = (((CLK->CLKDIV0 & CLK_CLKDIV0_UART_N_Msk) >> CLK_CLKDIV0_UART_N_Pos) + 1);
186
187 if(u32SrcFreq == 0)
188 {
189 u32SrcFreq = SysGet_PLLClockFreq() / u32SrcFreqDiv;
190 }
191 else
192 {
193 u32SrcFreq = u32SrcFreq / u32SrcFreqDiv;
194 }
195
196 uart->FUN_SEL = UART_FUNC_SEL_UART;
197 uart->TLCTL = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1 |
198 UART_TLCTL_RFITL_1BYTE | UART_TLCTL_RTS_TRI_LEV_1BYTE;
199
200 if(u32baudrate != 0)
201 {
202 u32Baud_Div = UART_BAUD_MODE0_DIVIDER(u32SrcFreq, u32baudrate);
203
204 if(u32Baud_Div > 0xFFFF)
205 uart->BAUD = (UART_BAUD_MODE1 | UART_BAUD_MODE1_DIVIDER(u32SrcFreq, u32baudrate));
206 else
207 uart->BAUD = (UART_BAUD_MODE0 | u32Baud_Div);
208 }
209}
210
211
222uint32_t UART_Read(UART_T* uart, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
223{
224 uint32_t u32Count, u32delayno;
225
226 for(u32Count=0; u32Count < u32ReadBytes; u32Count++)
227 {
228 u32delayno = 0;
229
230 while(uart->FSR & UART_FSR_RX_EMPTY_F_Msk) /* Check RX empty => failed */
231 {
232 u32delayno++;
233 if( u32delayno >= 0x40000000 )
234 return FALSE;
235 }
236 pu8RxBuf[u32Count] = uart->RBR; /* Get Data from UART RX */
237 }
238
239 return u32Count;
240
241}
242
243
256 void UART_SetLine_Config(UART_T* uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
257{
258 uint8_t u8UartClkSrcSel;
259 uint32_t u32ClkTbl[4] = {__HXT, __LXT, 0, __HIRC12M};
260 uint32_t u32Baud_Div = 0;
261 uint32_t u32SrcFreq;
262 uint32_t u32SrcFreqDiv;
263
264 u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
265
266 u32SrcFreq = u32ClkTbl[u8UartClkSrcSel];
267
268 u32SrcFreqDiv = (((CLK->CLKDIV0 & CLK_CLKDIV0_UART_N_Msk) >> CLK_CLKDIV0_UART_N_Pos) + 1);
269
270 if(u32SrcFreq == 0)
271 {
272 u32SrcFreq = SysGet_PLLClockFreq() / u32SrcFreqDiv;
273 }
274 else
275 {
276 u32SrcFreq = u32SrcFreq / u32SrcFreqDiv;
277 }
278
279 if(u32baudrate != 0)
280 {
281 u32Baud_Div = UART_BAUD_MODE0_DIVIDER(u32SrcFreq, u32baudrate);
282
283 if(u32Baud_Div > 0xFFFF)
284 uart->BAUD = (UART_BAUD_MODE1 | UART_BAUD_MODE1_DIVIDER(u32SrcFreq, u32baudrate));
285 else
286 uart->BAUD = (UART_BAUD_MODE0 | u32Baud_Div);
287 }
288
289 uart->TLCTL = u32data_width | u32parity | u32stop_bits;
290}
291
292
301 void UART_SetTimeoutCnt(UART_T* uart, uint32_t u32TOC)
302{
303 uart->TMCTL = (uart->TMCTL & ~UART_TMCTL_TOIC_Msk)| (u32TOC);
304 uart->IER |= UART_IER_RTO_IE_Msk;
305}
306
307
317 void UART_SelectIrDAMode(UART_T* uart, uint32_t u32Buadrate, uint32_t u32Direction)
318{
319 uint8_t u8UartClkSrcSel;
320 uint32_t u32ClkTbl[4] = {__HXT, __LXT, 0, __HIRC12M};
321 uint32_t u32SrcFreq;
322 uint32_t u32SrcFreqDiv;
323
324 u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART_S_Msk) >> CLK_CLKSEL1_UART_S_Pos;
325
326 u32SrcFreq = u32ClkTbl[u8UartClkSrcSel];
327
328 u32SrcFreqDiv = (((CLK->CLKDIV0 & CLK_CLKDIV0_UART_N_Msk) >> CLK_CLKDIV0_UART_N_Pos) + 1);
329
330 if(u32SrcFreq == 0)
331 {
332 u32SrcFreq = SysGet_PLLClockFreq() / u32SrcFreqDiv;
333 }
334 else
335 {
336 u32SrcFreq = u32SrcFreq / u32SrcFreqDiv;
337 }
338
339 uart->BAUD = UART_BAUD_MODE1 | UART_BAUD_MODE1_DIVIDER(u32SrcFreq, u32Buadrate);
340
341 uart->IRCR &= ~UART_IRCR_INV_TX_Msk;
342 uart->IRCR |= UART_IRCR_INV_RX_Msk;
343 uart->IRCR = u32Direction ? uart->IRCR | UART_IRCR_TX_SELECT_Msk : uart->IRCR &~ UART_IRCR_TX_SELECT_Msk;
344 uart->FUN_SEL = (0x2 << UART_FUN_SEL_FUN_SEL_Pos);
345}
346
347
357 void UART_SelectRS485Mode(UART_T* uart, uint32_t u32Mode, uint32_t u32Addr)
358{
359 uart->FUN_SEL = UART_FUNC_SEL_RS485;
360 uart->ALT_CTL = 0;
361 uart->ALT_CTL |= u32Mode | (u32Addr << UART_ALT_CTL_ADDR_PID_MATCH_Pos);
362}
363
378 void UART_SelectLINMode(UART_T* uart, uint32_t u32Mode, uint32_t u32BreakLength)
379{
380 /* Select LIN function mode */
381 uart->FUN_SEL = UART_FUNC_SEL_LIN;
382
383 /* Select LIN function setting : Tx enable, Rx enable and break field length */
384 uart->FUN_SEL = UART_FUNC_SEL_LIN;
385 uart->ALT_CTL &= ~(UART_ALT_CTL_LIN_TX_BCNT_Msk | UART_ALT_CTL_LIN_RX_EN_Msk | UART_ALT_CTL_LIN_TX_EN_Msk);
386 uart->ALT_CTL |= u32BreakLength & UART_ALT_CTL_LIN_TX_BCNT_Msk;
387 uart->ALT_CTL |= u32Mode;
388}
389
399uint32_t UART_Write(UART_T* uart,uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
400{
401 uint32_t u32Count, u32delayno;
402
403 for(u32Count=0; u32Count != u32WriteBytes; u32Count++)
404 {
405 u32delayno = 0;
406 while((uart->FSR & UART_FSR_TX_EMPTY_F_Msk) == 0) /* Wait Tx empty and Time-out manner */
407 {
408 u32delayno++;
409 if( u32delayno >= 0x40000000 )
410 return FALSE;
411 }
412 uart->THR = pu8TxBuf[u32Count]; /* Send UART Data from buffer */
413 }
414
415 return u32Count;
416
417}
418
419 /* end of group NANO100_UART_EXPORTED_FUNCTIONS */
421 /* end of group NANO100_UART_Driver */
423 /* end of group NANO100_Device_Driver */
425
426/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
427
428
429
Nano100Series.h
Nano100 series peripheral access layer header file. This file contains all the peripheral register's ...
UART_FSR_BI_F_Msk
#define UART_FSR_BI_F_Msk
Definition: Nano100Series.h:10737
UART_MCSR_LEV_RTS_Msk
#define UART_MCSR_LEV_RTS_Msk
Definition: Nano100Series.h:10758
UART_IRCR_TX_SELECT_Msk
#define UART_IRCR_TX_SELECT_Msk
Definition: Nano100Series.h:10785
UART_ISR_ABAUD_IS_Msk
#define UART_ISR_ABAUD_IS_Msk
Definition: Nano100Series.h:10695
UART_IRCR_INV_RX_Msk
#define UART_IRCR_INV_RX_Msk
Definition: Nano100Series.h:10791
UART_TRSR_ABAUD_F_Msk
#define UART_TRSR_ABAUD_F_Msk
Definition: Nano100Series.h:10704
UART_TRSR_ABAUD_TOUT_F_Msk
#define UART_TRSR_ABAUD_TOUT_F_Msk
Definition: Nano100Series.h:10707
UART_IER_RTO_IE_Msk
#define UART_IER_RTO_IE_Msk
Definition: Nano100Series.h:10659
UART_FSR_TX_EMPTY_F_Msk
#define UART_FSR_TX_EMPTY_F_Msk
Definition: Nano100Series.h:10743
UART_TRSR_LIN_TX_F_Msk
#define UART_TRSR_LIN_TX_F_Msk
Definition: Nano100Series.h:10710
UART_ALT_CTL_LIN_TX_BCNT_Msk
#define UART_ALT_CTL_LIN_TX_BCNT_Msk
Definition: Nano100Series.h:10794
UART_FSR_RX_OVER_F_Msk
#define UART_FSR_RX_OVER_F_Msk
Definition: Nano100Series.h:10722
UART_TRSR_BIT_ERR_F_Msk
#define UART_TRSR_BIT_ERR_F_Msk
Definition: Nano100Series.h:10716
UART_ISR_BUF_ERR_IS_Msk
#define UART_ISR_BUF_ERR_IS_Msk
Definition: Nano100Series.h:10689
UART_FUN_SEL_FUN_SEL_Pos
#define UART_FUN_SEL_FUN_SEL_Pos
Definition: Nano100Series.h:10823
UART_ISR_LIN_IS_Msk
#define UART_ISR_LIN_IS_Msk
Definition: Nano100Series.h:10698
UART_FSR_FE_F_Msk
#define UART_FSR_FE_F_Msk
Definition: Nano100Series.h:10734
UART_TRSR_RS485_ADDET_F_Msk
#define UART_TRSR_RS485_ADDET_F_Msk
Definition: Nano100Series.h:10701
UART_FSR_PE_F_Msk
#define UART_FSR_PE_F_Msk
Definition: Nano100Series.h:10731
UART_ISR_WAKE_IS_Msk
#define UART_ISR_WAKE_IS_Msk
Definition: Nano100Series.h:10692
UART_ISR_RLS_IS_Msk
#define UART_ISR_RLS_IS_Msk
Definition: Nano100Series.h:10680
UART_FSR_TX_OVER_F_Msk
#define UART_FSR_TX_OVER_F_Msk
Definition: Nano100Series.h:10740
UART_CTL_AUTO_RTS_EN_Msk
#define UART_CTL_AUTO_RTS_EN_Msk
Definition: Nano100Series.h:10602
UART_FSR_RX_EMPTY_F_Msk
#define UART_FSR_RX_EMPTY_F_Msk
Definition: Nano100Series.h:10725
UART_ALT_CTL_LIN_RX_EN_Msk
#define UART_ALT_CTL_LIN_RX_EN_Msk
Definition: Nano100Series.h:10800
UART_TRSR_LIN_RX_F_Msk
#define UART_TRSR_LIN_RX_F_Msk
Definition: Nano100Series.h:10713
UART_CTL_AUTO_CTS_EN_Msk
#define UART_CTL_AUTO_CTS_EN_Msk
Definition: Nano100Series.h:10605
UART_MCSR_LEV_CTS_Msk
#define UART_MCSR_LEV_CTS_Msk
Definition: Nano100Series.h:10764
UART_ALT_CTL_ADDR_PID_MATCH_Pos
#define UART_ALT_CTL_ADDR_PID_MATCH_Pos
Definition: Nano100Series.h:10820
UART_ALT_CTL_LIN_TX_EN_Msk
#define UART_ALT_CTL_LIN_TX_EN_Msk
Definition: Nano100Series.h:10803
UART_MCSR_DCT_F_Msk
#define UART_MCSR_DCT_F_Msk
Definition: Nano100Series.h:10770
UART_ISR_MODEM_IS_Msk
#define UART_ISR_MODEM_IS_Msk
Definition: Nano100Series.h:10683
CLK_CLKDIV0_UART_N_Pos
#define CLK_CLKDIV0_UART_N_Pos
Definition: Nano100Series.h:1419
CLK_CLKDIV0_UART_N_Msk
#define CLK_CLKDIV0_UART_N_Msk
Definition: Nano100Series.h:1420
CLK_CLKSEL1_UART_S_Pos
#define CLK_CLKSEL1_UART_S_Pos
Definition: Nano100Series.h:1362
CLK_CLKSEL1_UART_S_Msk
#define CLK_CLKSEL1_UART_S_Msk
Definition: Nano100Series.h:1363
CLK
#define CLK
Pointer to CLK register structure.
Definition: Nano100Series.h:11693
UART_FUNC_SEL_LIN
#define UART_FUNC_SEL_LIN
Definition: uart.h:74
UART_PARITY_NONE
#define UART_PARITY_NONE
Definition: uart.h:43
UART_STOP_BIT_1
#define UART_STOP_BIT_1
Definition: uart.h:49
UART_WORD_LEN_8
#define UART_WORD_LEN_8
Definition: uart.h:41
UART_TLCTL_RFITL_1BYTE
#define UART_TLCTL_RFITL_1BYTE
Definition: uart.h:53
UART_TLCTL_RTS_TRI_LEV_1BYTE
#define UART_TLCTL_RTS_TRI_LEV_1BYTE
Definition: uart.h:58
UART_FUNC_SEL_UART
#define UART_FUNC_SEL_UART
Definition: uart.h:73
UART_FUNC_SEL_RS485
#define UART_FUNC_SEL_RS485
Definition: uart.h:76
UART_SelectRS485Mode
void UART_SelectRS485Mode(UART_T *uart, uint32_t u32Mode, uint32_t u32Addr)
The function is used to set RS485 relative setting.
Definition: uart.c:357
UART_SelectLINMode
void UART_SelectLINMode(UART_T *uart, uint32_t u32Mode, uint32_t u32BreakLength)
Select and configure LIN function.
Definition: uart.c:378
UART_EnableInt
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:159
UART_BAUD_MODE1
#define UART_BAUD_MODE1
Calculate UART baudrate mode0 divider.
Definition: uart.h:104
UART_BAUD_MODE0
#define UART_BAUD_MODE0
Calculate UART baudrate mode0 divider.
Definition: uart.h:94
UART_SetTimeoutCnt
void UART_SetTimeoutCnt(UART_T *uart, uint32_t u32TOC)
This function use to set Rx timeout count.
Definition: uart.c:301
UART_Close
void UART_Close(UART_T *uart)
The function is used to disable UART.
Definition: uart.c:83
UART_BAUD_MODE0_DIVIDER
#define UART_BAUD_MODE0_DIVIDER(u32SrcFreq, u32BaudRate)
Calculate UART baudrate mode2 divider.
Definition: uart.h:126
UART_ClearIntFlag
void UART_ClearIntFlag(UART_T *uart, uint32_t u32InterruptFlag)
The function is used to clear UART specified interrupt flag.
Definition: uart.c:41
UART_DisableFlowCtrl
void UART_DisableFlowCtrl(UART_T *uart)
The function is used to disable UART auto flow control.
Definition: uart.c:96
UART_EnableFlowCtrl
void UART_EnableFlowCtrl(UART_T *uart)
The function is used to Enable UART auto flow control.
Definition: uart.c:134
UART_Write
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:399
UART_SetLine_Config
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:256
UART_DisableInt
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:120
UART_SelectIrDAMode
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:317
UART_Read
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:222
UART_BAUD_MODE1_DIVIDER
#define UART_BAUD_MODE1_DIVIDER(u32SrcFreq, u32BaudRate)
Calculate UART baudrate mode0 divider.
Definition: uart.h:116
UART_Open
void UART_Open(UART_T *uart, uint32_t u32baudrate)
This function use to enable UART function and set baud-rate.
Definition: uart.c:173
UART_T::MCSR
__IO uint32_t MCSR
Definition: Nano100Series.h:10448
UART_T::BAUD
__IO uint32_t BAUD
Definition: Nano100Series.h:10487
UART_T::ISR
__IO uint32_t ISR
Definition: Nano100Series.h:10318
UART_T::IER
__IO uint32_t IER
Definition: Nano100Series.h:10270
UART_T::FSR
__IO uint32_t FSR
Definition: Nano100Series.h:10421
UART_T::TRSR
__IO uint32_t TRSR
Definition: Nano100Series.h:10370
UART_T::FUN_SEL
__IO uint32_t FUN_SEL
Definition: Nano100Series.h:10577
UART_T::TLCTL
__IO uint32_t TLCTL
Definition: Nano100Series.h:10233
UART_T::TMCTL
__IO uint32_t TMCTL
Definition: Nano100Series.h:10471
UART_T::CTL
__IO uint32_t CTL
Definition: Nano100Series.h:10187
FALSE
#define FALSE
Boolean false, define to use in API parameters or return value.
Definition: Nano100Series.h:11863
UART_T::THR
__O uint32_t THR
Definition: Nano100Series.h:10128
UART_T::IRCR
__IO uint32_t IRCR
Definition: Nano100Series.h:10509
UART_T::RBR
__I uint32_t RBR
Definition: Nano100Series.h:10115
UART_T::ALT_CTL
__IO uint32_t ALT_CTL
Definition: Nano100Series.h:10562
UART_T
Definition: Nano100Series.h:10099
__HXT
#define __HXT
Definition: system_Nano100Series.h:26
__LXT
#define __LXT
Definition: system_Nano100Series.h:27
SysGet_PLLClockFreq
uint32_t SysGet_PLLClockFreq(void)
Calculate current PLL clock frequency.
Definition: system_Nano100Series.c:28
__HIRC12M
#define __HIRC12M
Definition: system_Nano100Series.h:28