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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 */
52 #if CPU_CM3_STM32F103RB || CPU_CM3_STM32F103RE
55 SER_CNT //< Number of serial ports
59 #define SERRF_RXFIFOOVERRUN BV(6) //< Rx FIFO buffer overrun
60 #define SERRF_RXTIMEOUT BV(5) //< Receive timeout
61 #define SERRF_TXTIMEOUT BV(4) //< Transmit timeout
66 #define SERRF_RXSROVERRUN SR_ORE //< Input overrun
67 #define SERRF_FRAMEERROR SR_FE //< Stop bit missing
68 #define SERRF_PARITYERROR SR_PE //< Parity error
69 #define SERRF_NOISEERROR SR_NE //< Noise error
71 /* Serial error/status flags */
72 typedef uint32_t serstatus_t;
74 INLINE void stm32_uartDisable(uint32_t base)
76 struct stm32_usart *_base = (struct stm32_usart *)base;
77 _base->CR1 &= ~CR1_RUN_RESET;
80 INLINE void stm32_uartEnable(uint32_t base)
82 struct stm32_usart *_base = (struct stm32_usart *)base;
83 _base->CR1 |= CR1_RUN_SET;
86 /* Clear the flags register */
87 INLINE void stm32_uartClear(uint32_t base)
89 struct stm32_usart *_base = (struct stm32_usart *)base;
90 _base->SR &= ~USART_FLAG_MASK;
93 INLINE bool stm32_uartTxDone(uint32_t base)
95 struct stm32_usart *_base = (struct stm32_usart *)base;
96 return (_base->SR & USART_FLAG_TC);
99 INLINE bool stm32_uartTxReady(uint32_t base)
101 struct stm32_usart *_base = (struct stm32_usart *)base;
102 return (_base->SR & (BV(CR1_TXEIE) | BV(CR1_TCIE)));
105 INLINE bool stm32_uartRxReady(uint32_t base)
107 struct stm32_usart *_base = (struct stm32_usart *)base;
108 return (_base->SR & BV(CR1_RXNEIE));
111 INLINE int stm32_uartPutChar(uint32_t base, unsigned char c)
113 struct stm32_usart *_base = (struct stm32_usart *)base;
114 while (!stm32_uartTxReady(base))
120 INLINE int stm32_uartGetChar(uint32_t base)
122 struct stm32_usart * _base = (struct stm32_usart *)base;
126 void stm32_uartSetBaudRate(uint32_t base, unsigned long baud);
127 void stm32_uartSetParity(uint32_t base, int parity);
128 void stm32_uartInit(int port);
130 #endif /* SER_STM32_H */