for i in range(10):
print("Host DMA pages %3d: %.8X") % (i, pages[i])
print '\nInitialise memory pages'
gn4124.set_memory_page(0, 0x0)
gn4124.set_memory_page(1, 0xC0FFEE11)
gn4124.set_memory_page(2, 0xDEADBABE)
gn4124.set_memory_page(3, 0x0)
gn4124.set_memory_page(4, 0x0)
print '\nReading data from memory page 2 (before DMA)'
page2_data_before = gn4124.get_memory_page(2)
print '\nPreparing DMA'
dma_length = 0x100 # DMA length in bytes
gn4124.add_dma_item(0, pages[1], dma_length, 1, 1) # write from page 1 to SPEC memory
gn4124.add_dma_item(0, pages[2], dma_length, 0, 0) # read from SPEC memory to page 2
print '\nPage 0 data - DMA next items'
page0_data = gn4124.get_memory_page(0)
if DEBUG != 0:
for i in range(4*(0x20/4)):
print("[%.2X]:%.8X") % (pages[0]+i*4,page0_data[i])
for i in range(1000):
print(" TEST => %d")%i
print("DMA controller status : %s") % gn4124.get_dma_status()
print '\n Start DMA transfer'
gn4124.start_dma()
print("Status:%.8X") % adc_csr.rd_reg(CSR_STATUS)
time.sleep(.1)
print("Status:%.8X") % adc_csr.rd_reg(CSR_STATUS)
print 'End of acquisition'
print '\nReading data from memory page 1 (before DMA)'
page1_data_before = gn4124.get_memory_page(1)
print '\nPreparing DMA'
dma_length = 0x1000 # DMA length in bytes
for i in range(10):
print("Host DMA pages %3d: %.8X") % (i, pages[i])
gn4124.add_dma_item(0*dma_length, pages[1]+0*dma_length, dma_length, 0, 1)
gn4124.add_dma_item(1*dma_length, pages[2]+0*dma_length, dma_length, 0, 1)
gn4124.add_dma_item(2*dma_length, pages[3]+0*dma_length, dma_length, 0, 1)
gn4124.add_dma_item(3*dma_length, pages[4]+0*dma_length, dma_length, 0, 0)
#gn4124.add_dma_item(1*dma_length, pages[1]+1*dma_length, dma_length, 0, 1)
#gn4124.add_dma_item(2*dma_length, pages[1]+2*dma_length, dma_length, 0, 1)
#gn4124.add_dma_item(3*dma_length, pages[1]+3*dma_length, dma_length, 0, 0)
print '\nPage 0 data - DMA next items'
page0_data = gn4124.get_memory_page(0)
for i in range(4*(0x20/4)):
print("[%.2X]:%.8X") % (pages[0]+i*4,page0_data[i])
print("DMA controller status : %s") % gn4124.get_dma_status()
print '\n Start DMA transfer'