Hello i am new with the psoc and have a problem.
I am using a timer to capture the time between two rising edges. After the second edge occur the timer generate a interrupt signal on the interrupt Output. This signal i am using to start the DMA Transfer. With the DMA i want to get the captured Values at the Timer FIFO. My problem is that i get only one Value. My design and code are below.
#include <device.h>
uint8 fifo_resynchtimer_dma_Chan;
uint8 fifo_resynchtimer_dma_TD[1];
bit resynch_flag=0;
uint16 synch_timer_captured[2];
uint16 period_synch=0;
#define fifo_resynchtimer_dma_BYTES_PER_BURST 4
#define fifo_resynchtimer_dma_REQUEST_PER_BURST 1
#define fifo_resynchtimer_dma_SRC_BASE (CYDEV_SRAM_BASE)
#define fifo_resynchtimer_dma_DST_BASE (CYDEV_SRAM_BASE)
void main()
{
CYGlobalIntEnable;
synch_gen_Start();
resynch_timer_Start();
isr_period_capture_Start();
lcd_Start();
fifo_resynchtimer_dma_Chan = fifo_resynchtimer_dma_DmaInitialize(fifo_resynchtimer_dma_BYTES_PER_BURST, fifo_resynchtimer_dma_REQUEST_PER_BURST,
HI16(fifo_resynchtimer_dma_SRC_BASE), HI16(fifo_resynchtimer_dma_DST_BASE));
fifo_resynchtimer_dma_TD[0] = CyDmaTdAllocate();
CyDmaTdSetConfiguration(fifo_resynchtimer_dma_TD[0], 2, fifo_resynchtimer_dma_TD[0], TD_SWAP_EN | fifo_resynchtimer_dma__TD_TERMOUT_EN | TD_INC_SRC_ADR | TD_INC_DST_ADR);
CyDmaTdSetAddress(fifo_resynchtimer_dma_TD[0], LO16((uint32)resynch_timer_CAPTURE_LSB_PTR), LO16((uint32)&synch_timer_captured[0]));
CyDmaChSetInitialTd(fifo_resynchtimer_dma_Chan, fifo_resynchtimer_dma_TD[0]);
CyDmaChEnable(fifo_resynchtimer_dma_Chan, 1);
for(;;)
{
if (resynch_flag)
{
resynch_flag=0; //resynch flag is set in the isr_period_capture
}
lcd_Position(0,0);
lcd_PrintInt16(synch_timer_captured[0]);
lcd_Position(1,0);
lcd_PrintInt16(synch_timer_captured[1]);
lcd_Position(0,8);
lcd_PrintInt16(synch_timer_ReadPeriod());
}
}
