Src/sdram.c (BSP) - CodeScope

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

/** ****************************************************************************** * @file BSP/Src/sdram.c * @author MCD Application Team * @brief This example code shows how to use the SDRAM Driver ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /** @addtogroup STM32F4xx_HAL_Examples * @{ */ /** @addtogroup BSP * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ #define BUFFER_SIZE ((uint32_t)0x0100) #define WRITE_READ_ADDR ((uint32_t)0x0800) #define SDRAM_WRITE_READ_ADDR ((uint32_t)0xC0130000) /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ uint32_t sdram_aTxBuffer[BUFFER_SIZE]; uint32_t sdram_aRxBuffer[BUFFER_SIZE]; /* Private function prototypes -----------------------------------------------*/ static void SDRAM_SetHint(void); static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset); static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength); /* Private functions ---------------------------------------------------------*/ /** * @brief SDRAM Demo * @param None * @retval None */ void SDRAM_demo(void) { SDRAM_SetHint(); /* SDRAM device configuration */ if(BSP_SDRAM_Init() != SDRAM_OK) { BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SDRAM Initialization : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM Test Aborted.", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SDRAM Initialization : OK.", LEFT_MODE); } /* Fill the buffer to write */ Fill_Buffer(sdram_aTxBuffer, BUFFER_SIZE, 0xA244250F); /* Write data to the SDRAM memory */ if(BSP_SDRAM_WriteData(SDRAM_WRITE_READ_ADDR + WRITE_READ_ADDR, sdram_aTxBuffer, BUFFER_SIZE) != SDRAM_OK) { BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SDRAM WRITE : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM Test Aborted.", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SDRAM WRITE : OK.", LEFT_MODE); } /* Read back data from the SDRAM memory */ if(BSP_SDRAM_ReadData(SDRAM_WRITE_READ_ADDR + WRITE_READ_ADDR, sdram_aRxBuffer, BUFFER_SIZE) != SDRAM_OK) { BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM READ : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SDRAM Test Aborted.", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM READ : OK.", LEFT_MODE); } if(Buffercmp(sdram_aTxBuffer, sdram_aRxBuffer, BUFFER_SIZE) > 0) { BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SDRAM COMPARE : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SDRAM Test Aborted.", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SDRAM Test : OK.", LEFT_MODE); } while (1) { if(CheckForUserInput() > 0) { return; } } } /** * @brief Display SDRAM Demo Hint * @param None * @retval None */ static void SDRAM_SetHint(void) { /* Clear the LCD */ BSP_LCD_Clear(LCD_COLOR_WHITE); /* Set LCD Demo description */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetFont(&Font24); BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"SDRAM", CENTER_MODE); BSP_LCD_SetFont(&Font12); BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"This example shows how to write", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"and read data on SDRAM", CENTER_MODE); /* Set the LCD Text Color */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 100); BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 102); BSP_LCD_SetTextColor(LCD_COLOR_BLACK); BSP_LCD_SetBackColor(LCD_COLOR_WHITE); } /** * @brief Fills buffer with user predefined data. * @param pBuffer: pointer on the buffer to fill * @param uwBufferLenght: size of the buffer to fill * @param uwOffset: first value to fill on the buffer * @retval None */ static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset) { uint32_t tmpIndex = 0; /* Put in global buffer different values */ for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++ ) { pBuffer[tmpIndex] = tmpIndex + uwOffset; } } /** * @brief Compares two buffers. * @param pBuffer1, pBuffer2: buffers to be compared. * @param BufferLength: buffer's length * @retval 1: pBuffer identical to pBuffer1 * 0: pBuffer differs from pBuffer1 */ static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength) { while (BufferLength--) { if (*pBuffer1 != *pBuffer2) { return 1; } pBuffer1++; pBuffer2++; } return 0; } /** * @} */ /** * @} */