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29 * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
33 * \brief STM32F10xx UART interface driver.
35 * \author Daniele Basile <asterix@develer.com>
41 #include <cfg/debug.h>
43 #include <cpu/power.h> /* cpu_relax() */
47 /* Serial hardware numbers */
54 SER_CNT //< Number of serial ports
58 #define SERRF_RXFIFOOVERRUN BV(6) //< Rx FIFO buffer overrun
59 #define SERRF_RXTIMEOUT BV(5) //< Receive timeout
60 #define SERRF_TXTIMEOUT BV(4) //< Transmit timeout
65 #define SERRF_RXSROVERRUN SR_ORE //< Input overrun
66 #define SERRF_FRAMEERROR SR_FE //< Stop bit missing
67 #define SERRF_PARITYERROR SR_PE //< Parity error
68 #define SERRF_NOISEERROR SR_NE //< Noise error
70 /* Serial error/status flags */
71 typedef uint32_t serstatus_t;
73 INLINE void stm32_uartDisable(uint32_t base)
75 struct stm32_usart *_base = (struct stm32_usart *)base;
76 _base->CR1 &= ~CR1_RUN_RESET;
79 INLINE void stm32_uartEnable(uint32_t base)
81 struct stm32_usart *_base = (struct stm32_usart *)base;
82 _base->CR1 |= CR1_RUN_SET;
85 /* Clear the flags register */
86 INLINE void stm32_uartClear(uint32_t base)
88 struct stm32_usart *_base = (struct stm32_usart *)base;
89 _base->SR &= ~USART_FLAG_MASK;
92 INLINE bool stm32_uartTxDone(uint32_t base)
94 struct stm32_usart *_base = (struct stm32_usart *)base;
95 return (_base->SR & USART_FLAG_TC);
98 INLINE bool stm32_uartTxReady(uint32_t base)
100 struct stm32_usart *_base = (struct stm32_usart *)base;
101 return (_base->SR & (BV(CR1_TXEIE) | BV(CR1_TCIE)));
104 INLINE bool stm32_uartRxReady(uint32_t base)
106 struct stm32_usart *_base = (struct stm32_usart *)base;
107 return (_base->SR & BV(CR1_RXNEIE));
110 INLINE int stm32_uartPutChar(uint32_t base, unsigned char c)
112 struct stm32_usart *_base = (struct stm32_usart *)base;
113 while (!stm32_uartTxReady(base))
119 INLINE int stm32_uartGetChar(uint32_t base)
121 struct stm32_usart * _base = (struct stm32_usart *)base;
125 void stm32_uartSetBaudRate(uint32_t base, unsigned long baud);
126 void stm32_uartSetParity(uint32_t base, int parity);
127 void stm32_uartInit(int port);
129 #endif /* SER_STM32_H */