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STM8S/A Standard Peripherals Firmware Library
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STM8S_StdPeriph_Examples/UART1/UART1_MultiProcessor/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file UART1_MultiProcessor\main.c 00004 * @brief This file contains the main function for:use the UART1 in multi-processor mode example. 00005 * @author MCD Application Team 00006 * @version V2.2.0 00007 * @date 30-September-2014 00008 ****************************************************************************** 00009 * @attention 00010 * 00011 * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> 00012 * 00013 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); 00014 * You may not use this file except in compliance with the License. 00015 * You may obtain a copy of the License at: 00016 * 00017 * http://www.st.com/software_license_agreement_liberty_v2 00018 * 00019 * Unless required by applicable law or agreed to in writing, software 00020 * distributed under the License is distributed on an "AS IS" BASIS, 00021 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00022 * See the License for the specific language governing permissions and 00023 * limitations under the License. 00024 * 00025 ****************************************************************************** 00026 */ 00027 00028 /* Includes ------------------------------------------------------------------*/ 00029 #include "stm8s.h" 00030 #include "stm8s_eval.h" 00031 00032 /** 00033 * @addtogroup UART1_MultiProcessor 00034 * @{ 00035 */ 00036 /* Private typedef -----------------------------------------------------------*/ 00037 /* Private define ------------------------------------------------------------*/ 00038 /* Private macro -------------------------------------------------------------*/ 00039 /* Private variables ---------------------------------------------------------*/ 00040 /* Private function prototypes -----------------------------------------------*/ 00041 static void GPIO_Config(void); 00042 static void UART_Config(void); 00043 void Delay(uint32_t nCount); 00044 /* Private functions ---------------------------------------------------------*/ 00045 00046 /** 00047 * @brief Main program. 00048 * @param None 00049 * @retval None 00050 */ 00051 void main(void) 00052 { 00053 /* GPIO configuration -----------------------------------------*/ 00054 GPIO_Config(); 00055 00056 /* UART configuration -----------------------------------------*/ 00057 UART_Config(); 00058 00059 while (1) 00060 { 00061 /* Send one byte from UART1 to UART3 */ 00062 UART1_SendData9(0x33); 00063 00064 /* Wait while UART1 TXE = 0 */ 00065 while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET) 00066 { 00067 } 00068 if (UART3_GetFlagStatus(UART3_FLAG_RXNE) != RESET) 00069 { 00070 if (UART3_ReceiveData9() == 0x33) 00071 { 00072 STM_EVAL_LEDToggle(LED1); 00073 STM_EVAL_LEDToggle(LED2); 00074 STM_EVAL_LEDToggle(LED3); 00075 STM_EVAL_LEDToggle(LED4); 00076 Delay(0x5FF); 00077 } 00078 } 00079 } 00080 } 00081 00082 /** 00083 * @brief Configure GPIO for Leds and buttons available on the evaluation board 00084 * @param None 00085 * @retval None 00086 */ 00087 static void GPIO_Config(void) 00088 { 00089 /* Initialize I/Os in Output Mode for LEDs */ 00090 STM_EVAL_LEDInit(LED1); 00091 STM_EVAL_LEDInit(LED2); 00092 STM_EVAL_LEDInit(LED3); 00093 STM_EVAL_LEDInit(LED4); 00094 00095 /* Put all Leds On*/ 00096 STM_EVAL_LEDOn(LED1); 00097 STM_EVAL_LEDOn(LED2); 00098 STM_EVAL_LEDOn(LED3); 00099 STM_EVAL_LEDOn(LED4); 00100 00101 /* Initialize I/O for Key button*/ 00102 STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI); 00103 00104 /* Initialize I/O for Joystick Up*/ 00105 STM_EVAL_PBInit(BUTTON_UP, BUTTON_MODE_EXTI); 00106 00107 enableInterrupts(); 00108 } 00109 00110 /** 00111 * @brief UART1 and UART3 Configuration for multi processor communication 00112 * @param None 00113 * @retval None 00114 */ 00115 static void UART_Config(void) 00116 { 00117 UART1_DeInit(); 00118 /* UART1 configured as follow: 00119 - BaudRate = 9600 baud 00120 - Word Length = 9 Bits 00121 - One Stop Bit 00122 - No parity 00123 - Receive and Transmit enabled 00124 - UART1 Clock disabled 00125 */ 00126 UART1_Init((uint32_t)9600, UART1_WORDLENGTH_9D, UART1_STOPBITS_1, UART1_PARITY_NO, 00127 UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE); 00128 00129 /* Set the UART1 Address */ 00130 UART1_SetAddress(0x1); 00131 00132 UART3_DeInit(); 00133 /* UART3 configured as follow: 00134 - BaudRate = 9600 baud 00135 - Word Length = 9 Bits 00136 - One Stop Bit 00137 - No parity 00138 - Receive and transmit enabled 00139 */ 00140 UART3_Init((uint32_t)9600, UART3_WORDLENGTH_9D, UART3_STOPBITS_1, UART3_PARITY_NO, 00141 UART3_MODE_TXRX_ENABLE); 00142 00143 /* Set the UART3 Address */ 00144 UART3_SetAddress(0x2); 00145 00146 /* Select the UART3 WakeUp Method */ 00147 UART3_WakeUpConfig(UART3_WAKEUP_ADDRESSMARK); 00148 } 00149 00150 /** 00151 * @brief Delay. 00152 * @param nCount 00153 * @retval None 00154 */ 00155 void Delay(uint32_t nCount) 00156 { 00157 /* Decrement nCount value */ 00158 while (nCount != 0) 00159 { 00160 nCount--; 00161 } 00162 } 00163 00164 #ifdef USE_FULL_ASSERT 00165 00166 /** 00167 * @brief Reports the name of the source file and the source line number 00168 * where the assert_param error has occurred. 00169 * @param file: pointer to the source file name 00170 * @param line: assert_param error line source number 00171 * @retval None 00172 */ 00173 void assert_failed(uint8_t* file, uint32_t line) 00174 { 00175 /* User can add his own implementation to report the file name and line number, 00176 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00177 00178 /* Infinite loop */ 00179 while (1) 00180 { 00181 } 00182 } 00183 #endif 00184 00185 /** 00186 * @} 00187 */ 00188 00189 00190 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/