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  1. /*******************************************************************************
  2. *
  3. * uart.h - Definition file for UART communication using MSP430 TimerA
  4. * - peripheral
  5. *
  6. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. *
  12. * Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. *
  15. * Redistributions in binary form must reproduce the above copyright
  16. * notice, this list of conditions and the following disclaimer in the
  17. * documentation and/or other materials provided with the
  18. * distribution.
  19. *
  20. * Neither the name of Texas Instruments Incorporated nor the names of
  21. * its contributors may be used to endorse or promote products derived
  22. * from this software without specific prior written permission.
  23. *
  24. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35. *
  36. *
  37. ******************************************************************************/
  38. //------------------------------------------------------------------------------
  39. // Hardware-related definitions
  40. //------------------------------------------------------------------------------
  41. #define UART_TXD 0x02 // TXD on P1.1 (Timer0_A.OUT0)
  42. #define UART_RXD 0x04 // RXD on P1.2 (Timer0_A.CCI1A)
  43. //------------------------------------------------------------------------------
  44. // Conditions for 9600 Baud SW UART, SMCLK = 1MHz
  45. //------------------------------------------------------------------------------
  46. #define UART_TBIT_DIV_2 (1000000 / (9600 * 2))
  47. #define UART_TBIT (1000000 / 9600)
  48. #include "msp430g2452.h"
  49. void TimerA_UART_init(void);
  50. void TimerA_UART_shutdown(void);
  51. void TimerA_UART_tx(unsigned char byte);