ST
SDRAM for DISCO_F746NG basic example
Dependencies: BSP_DISCO_F746NG
Revision 3:2bd1b98de6ec, committed 2019-11-20
- Comitter:
- Jerome Coutant
- Date:
- Wed Nov 20 13:27:16 2019 +0100
- Parent:
- 2:a4fa4bf7871d
- Commit message:
- Update with STM32Cube_FW_F7_V1.15.0
Changed in this revision
diff -r a4fa4bf7871d -r 2bd1b98de6ec .hgignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.hgignore Wed Nov 20 13:27:16 2019 +0100 @@ -0,0 +1,2 @@ +BUILD +mbed-os/
diff -r a4fa4bf7871d -r 2bd1b98de6ec BSP_DISCO_F746NG.lib --- a/BSP_DISCO_F746NG.lib Thu Jun 08 07:58:28 2017 +0000 +++ b/BSP_DISCO_F746NG.lib Wed Nov 20 13:27:16 2019 +0100 @@ -1,1 +1,1 @@ -https://developer.mbed.org/teams/ST/code/BSP_DISCO_F746NG/#ee089790cdbb +https://mbed.org/teams/ST/code/BSP_DISCO_F746NG/#1050c589b2ad
diff -r a4fa4bf7871d -r 2bd1b98de6ec SDRAM_DISCO_F746NG.lib --- a/SDRAM_DISCO_F746NG.lib Thu Jun 08 07:58:28 2017 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -https://developer.mbed.org/teams/ST/code/SDRAM_DISCO_F746NG/#370f402a2219
diff -r a4fa4bf7871d -r 2bd1b98de6ec main.cpp
--- a/main.cpp Thu Jun 08 07:58:28 2017 +0000
+++ b/main.cpp Wed Nov 20 13:27:16 2019 +0100
@@ -1,76 +1,56 @@
#include "mbed.h"
-#include "SDRAM_DISCO_F746NG.h"
-
-SDRAM_DISCO_F746NG sdram;
-
-DigitalOut led_green(LED1);
-DigitalOut led_red(LED2);
-
-Serial pc(USBTX, USBRX);
+#include "stm32746g_discovery_sdram.h"
#define BUFFER_SIZE ((uint32_t)0x0100)
#define WRITE_READ_ADDR ((uint32_t)0x0800)
-
+
void FillBuffer(uint32_t *pBuffer, uint32_t BufferLength, uint32_t Offset);
-uint8_t CompareBuffer(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength);
-
+uint8_t CompareBuffer(uint32_t *pBuffer1, uint32_t *pBuffer2, uint16_t BufferLength);
+
int main()
{
uint32_t WriteBuffer[BUFFER_SIZE];
uint32_t ReadBuffer[BUFFER_SIZE];
FMC_SDRAM_CommandTypeDef SDRAMCommandStructure;
-
- pc.printf("\n\nSDRAM demo started\n");
- led_red = 0;
-
+
+ printf("\n\nSDRAM demo started\n");
+
+ BSP_SDRAM_Init();
+
// Fill the write buffer
FillBuffer(WriteBuffer, BUFFER_SIZE, 0xA244250F);
-
+
// Write buffer
- sdram.WriteData(SDRAM_DEVICE_ADDR + WRITE_READ_ADDR, WriteBuffer, BUFFER_SIZE);
- pc.printf("Write data DONE\n");
-
+ BSP_SDRAM_WriteData(SDRAM_DEVICE_ADDR + WRITE_READ_ADDR, WriteBuffer, BUFFER_SIZE);
+ printf("Write data DONE\n");
+
// Issue self-refresh command to SDRAM device
SDRAMCommandStructure.CommandMode = FMC_SDRAM_CMD_SELFREFRESH_MODE;
SDRAMCommandStructure.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK2;
SDRAMCommandStructure.AutoRefreshNumber = 1;
SDRAMCommandStructure.ModeRegisterDefinition = 0;
- if (sdram.Sendcmd(&SDRAMCommandStructure) != HAL_OK)
- {
- led_red = 1;
- error("BSP_SDRAM_Sendcmd FAILED\n");
+ if (BSP_SDRAM_Sendcmd(&SDRAMCommandStructure) != HAL_OK) {
+ error("BSP_SDRAM_Sendcmd FAILED\n");
}
-
+
// SDRAM memory read back access
SDRAMCommandStructure.CommandMode = FMC_SDRAM_CMD_NORMAL_MODE;
- if (sdram.Sendcmd(&SDRAMCommandStructure) != HAL_OK)
- {
- led_red = 1;
- error("BSP_SDRAM_Sendcmd FAILED\n");
+ if (BSP_SDRAM_Sendcmd(&SDRAMCommandStructure) != HAL_OK) {
+ error("BSP_SDRAM_Sendcmd FAILED\n");
}
-
- while(1) {
-
- // Read back data from the SDRAM memory
- sdram.ReadData(SDRAM_DEVICE_ADDR + WRITE_READ_ADDR, ReadBuffer, BUFFER_SIZE);
- pc.printf("\nRead data DONE\n");
-
- // Checking data integrity
- if (CompareBuffer(WriteBuffer, ReadBuffer, BUFFER_SIZE) != 0)
- {
- led_red = !led_red;
- pc.printf("Write/Read buffers are different\n");
- }
- else
- {
- led_green = !led_green;
- pc.printf("Write/Read buffers are identical\n");
- }
-
- wait(1);
+
+ // Read back data from the SDRAM memory
+ BSP_SDRAM_ReadData(SDRAM_DEVICE_ADDR + WRITE_READ_ADDR, ReadBuffer, BUFFER_SIZE);
+ printf("Read data DONE\n");
+
+ // Checking data integrity
+ if (CompareBuffer(WriteBuffer, ReadBuffer, BUFFER_SIZE) != 0) {
+ printf("Write/Read buffers are different\n");
+ } else {
+ printf("Write/Read buffers are identical\n");
}
}
-
+
/**
* @brief Fills buffer with user predefined data.
* @param pBuffer: pointer on the buffer to fill
@@ -80,15 +60,14 @@
*/
void FillBuffer(uint32_t *pBuffer, uint32_t BufferLength, uint32_t Value)
{
- uint32_t tmpIndex = 0;
-
- /* Put in global buffer different values */
- for (tmpIndex = 0; tmpIndex < BufferLength; tmpIndex++ )
- {
- pBuffer[tmpIndex] = tmpIndex + Value;
- }
-}
-
+ uint32_t tmpIndex = 0;
+
+ /* Put in global buffer different values */
+ for (tmpIndex = 0; tmpIndex < BufferLength; tmpIndex++) {
+ pBuffer[tmpIndex] = tmpIndex + Value;
+ }
+}
+
/**
* @brief Compares two buffers.
* @param pBuffer1, pBuffer2: buffers to be compared.
@@ -96,18 +75,16 @@
* @retval 0: pBuffer2 identical to pBuffer1
* 1: pBuffer2 differs from pBuffer1
*/
-uint8_t CompareBuffer(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength)
+uint8_t CompareBuffer(uint32_t *pBuffer1, uint32_t *pBuffer2, uint16_t BufferLength)
{
- while (BufferLength--)
- {
- if (*pBuffer1 != *pBuffer2)
- {
- return 1;
+ while (BufferLength--) {
+ if (*pBuffer1 != *pBuffer2) {
+ return 1;
+ }
+
+ pBuffer1++;
+ pBuffer2++;
}
-
- pBuffer1++;
- pBuffer2++;
- }
-
- return 0;
+
+ return 0;
}
diff -r a4fa4bf7871d -r 2bd1b98de6ec mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Wed Nov 20 13:27:16 2019 +0100 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#699372421a3b388fe568e9be85b1a985749a438f
diff -r a4fa4bf7871d -r 2bd1b98de6ec mbed.bld --- a/mbed.bld Thu Jun 08 07:58:28 2017 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -https://mbed.org/users/mbed_official/code/mbed/builds/6c34061e7c34 \ No newline at end of file