Question
Dma external memory problem
Posted on November 13, 2014 at 07:30
i want to transfer my src array to external memory, but i could transfer only first member of my array (0x01) to GPIO ports and hold, where is other 9 members? :( what can i do?
#define SRAM_BANK_ADDR ((uint32_t)0x60000000)
#define BUF_SIZE ((uint32_t)0x10)
const
uint32_t src[BUF_SIZE]= {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 0x08, 0x09, 0x10}
DMA_HandleTypeDef dmaHandleSram;
void
dmaInit(
void
)
{
dmaHandleSram.Init.Channel =DMA_CHANNEL_0;
dmaHandleSram.Init.Direction =DMA_MEMORY_TO_MEMORY;
dmaHandleSram.Init.PeriphInc =DMA_PINC_ENABLE;
dmaHandleSram.Init.MemInc =DMA_MINC_ENABLE;
dmaHandleSram.Init.PeriphDataAlignment =DMA_PDATAALIGN_WORD;
dmaHandleSram.Init.MemDataAlignment =DMA_MDATAALIGN_WORD;
dmaHandleSram.Init.Mode =DMA_NORMAL;
dmaHandleSram.Init.Priority =DMA_PRIORITY_HIGH;
dmaHandleSram.Init.FIFOMode =DMA_FIFOMODE_DISABLE;
dmaHandleSram.Init.FIFOThreshold =DMA_FIFO_THRESHOLD_FULL;
dmaHandleSram.Init.MemBurst =DMA_MBURST_SINGLE;
dmaHandleSram.Init.PeriphBurst =DMA_PBURST_SINGLE;
//Select the DMA instance to be used for the transfer : DMA2_Stream0
dmaHandleMem2Sram.Instance = DMA2_Stream0;
//Select Call-backs functions called after Transfer complete and Transfer error
dmaHandleMem2Sram.XferCpltCallback = dmaComplete;
dmaHandleMem2Sram.XferErrorCallback = dmaError;
//Initialize the DMA stream
if
(HAL_DMA_Init(&dmaHandleSram) != HAL_OK)
{
Error_Handler();
//Initialization Error
}
//Configure NVIC for DMA transfer complete/error interrupts
HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);
__DMA2_CLK_ENABLE();
//Initialize the DMA stream
if
(HAL_DMA_Init(&dmaHandleSram) != HAL_OK)
{
Error_Handler();
//Initialization Error
}
HAL_NVIC_SetPriority(DMA2_Stream1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream1_IRQn);
if
(HAL_DMA_Start_IT(&dmaHandleSram, (uint32_t)src, (uint32_t)0X60000000, size) != HAL_OK)
{
Error_Handler();
//Initialization Error
}
}
void
fmcSramInit(
void
)
{
SRAM_HandleTypeDef hsram;
FMC_NORSRAM_TimingTypeDef SRAM_Timing;
//SRAM Configuration
hsram.Instance = FMC_NORSRAM_DEVICE;
hsram.Extended = FMC_NORSRAM_EXTENDED_DEVICE;
SRAM_Timing.AddressSetupTime = 1;
SRAM_Timing.AddressHoldTime = 1;
SRAM_Timing.DataSetupTime = 1;
SRAM_Timing.BusTurnAroundDuration = 0;
SRAM_Timing.CLKDivision = 5;
SRAM_Timing.DataLatency = 0;
SRAM_Timing.AccessMode = FSMC_ACCESS_MODE_A;
hsram.Init.NSBank = FSMC_NORSRAM_BANK1;
// 0x60000000
hsram.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;
hsram.Init.MemoryType = FSMC_MEMORY_TYPE_PSRAM;
hsram.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16;
hsram.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_ENABLE;
hsram.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_HIGH;
hsram.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;
hsram.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;
hsram.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;
hsram.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;
hsram.Init.ExtendedMode = FSMC_EXTENDED_MODE_DISABLE;
hsram.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;
hsram.Init.WriteBurst = FSMC_WRITE_BURST_ENABLE;
__FSMC_CLK_ENABLE();
//Initialize the SRAM controller
if
(HAL_SRAM_Init(&hsram, &SRAM_Timing, &SRAM_Timing) != HAL_OK)
{
//Initialization Error
Error_Handler();
}
}
void
FSMC_GPIOInit(
void
)
{
GPIO_InitTypeDef GPIO_InitStructure;
//Enable GPIOD and GPIOE clock
__GPIOD_CLK_ENABLE();
__GPIOE_CLK_ENABLE();
//Setup for output pins
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate = GPIO_AF12_FSMC;
// D0=PD14 D1=PD15 D2=PD0 D3=PD1 D4=PE7 D5=PE8 D6=PE9 D7=PE10 NOE=PD4 NWE=PD5 NWAIT=PD6 CLKOUT=PD3
//Configure PortD pins for us as FSMC output pins
GPIO_InitStructure.Pin = GPIO_PIN_14 | GPIO_PIN_15 | GPIO_PIN_3 | GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_3;
HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.Pin = GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10;
HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
}