STM8S/A Standard Peripherals Firmware Library: main.c Source File

00001 /**
00002   ******************************************************************************
00003   * @file UART1_Printf\main.c
00004   * @brief This file contains the main function for: retarget the C library printf
00005   *        /scanf functions to the UART1 example.
00006   * @author  MCD Application Team
00007   * @version  V2.2.0
00008   * @date     30-September-2014
00009   ******************************************************************************
00010   * @attention
00011   *
00012   * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
00013   *
00014   * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
00015   * You may not use this file except in compliance with the License.
00016   * You may obtain a copy of the License at:
00017   *
00018   *        http://www.st.com/software_license_agreement_liberty_v2
00019   *
00020   * Unless required by applicable law or agreed to in writing, software 
00021   * distributed under the License is distributed on an "AS IS" BASIS, 
00022   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00023   * See the License for the specific language governing permissions and
00024   * limitations under the License.
00025   *
00026   ******************************************************************************
00027   */ 
00028 
00029 /* Includes ------------------------------------------------------------------*/
00030 #include "stm8s.h"
00031 #include "stdio.h"
00032 /**
00033   * @addtogroup UART1_Printf
00034   * @{
00035   */
00036 /* Private typedef -----------------------------------------------------------*/
00037 /* Private define ------------------------------------------------------------*/
00038 #ifdef _RAISONANCE_
00039 #define PUTCHAR_PROTOTYPE int putchar (char c)
00040 #define GETCHAR_PROTOTYPE int getchar (void)
00041 #elif defined (_COSMIC_)
00042 #define PUTCHAR_PROTOTYPE char putchar (char c)
00043 #define GETCHAR_PROTOTYPE char getchar (void)
00044 #else /* _IAR_ */
00045 #define PUTCHAR_PROTOTYPE int putchar (int c)
00046 #define GETCHAR_PROTOTYPE int getchar (void)
00047 #endif /* _RAISONANCE_ */
00048 /* Private macro -------------------------------------------------------------*/
00049 /* Private variables ---------------------------------------------------------*/
00050 /* Private function prototypes -----------------------------------------------*/
00051 /* Private functions ---------------------------------------------------------*/
00052 /**
00053   * @brief  Main program.
00054   * @param  None
00055   * @retval None
00056   */
00057 void main(void)
00058 {
00059   char ans;
00060   /*High speed internal clock prescaler: 1*/
00061   CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
00062     
00063   UART1_DeInit();
00064   /* UART1 configuration ------------------------------------------------------*/
00065   /* UART1 configured as follow:
00066         - BaudRate = 115200 baud  
00067         - Word Length = 8 Bits
00068         - One Stop Bit
00069         - No parity
00070         - Receive and transmit enabled
00071         - UART1 Clock disabled
00072   */
00073   UART1_Init((uint32_t)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO,
00074               UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE);
00075 
00076   /* Output a message on Hyperterminal using printf function */
00077   printf("\n\rUART1 Example :retarget the C library printf()/getchar() functions to the UART\n\r");
00078   printf("\n\rEnter Text\n\r");
00079 
00080   while (1)
00081   {
00082     ans = getchar();
00083     printf("%c", ans);  
00084   }
00085 }
00086 
00087 /**
00088   * @brief Retargets the C library printf function to the UART.
00089   * @param c Character to send
00090   * @retval char Character sent
00091   */
00092 PUTCHAR_PROTOTYPE
00093 {
00094   /* Write a character to the UART1 */
00095   UART1_SendData8(c);
00096   /* Loop until the end of transmission */
00097   while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET);
00098 
00099   return (c);
00100 }
00101 
00102 /**
00103   * @brief Retargets the C library scanf function to the USART.
00104   * @param None
00105   * @retval char Character to Read
00106   */
00107 GETCHAR_PROTOTYPE
00108 {
00109 #ifdef _COSMIC_
00110   char c = 0;
00111 #else
00112   int c = 0;
00113 #endif
00114   /* Loop until the Read data register flag is SET */
00115   while (UART1_GetFlagStatus(UART1_FLAG_RXNE) == RESET);
00116     c = UART1_ReceiveData8();
00117   return (c);
00118 }
00119 
00120 #ifdef USE_FULL_ASSERT
00121 
00122 /**
00123   * @brief  Reports the name of the source file and the source line number
00124   *   where the assert_param error has occurred.
00125   * @param file: pointer to the source file name
00126   * @param line: assert_param error line source number
00127   * @retval None
00128   */
00129 void assert_failed(uint8_t* file, uint32_t line)
00130 { 
00131   /* User can add his own implementation to report the file name and line number,
00132      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
00133 
00134   /* Infinite loop */
00135   while (1)
00136   {
00137   }
00138 }
00139 #endif
00140 
00141 /**
00142   * @}
00143   */
00144 
00145 
00146 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/