Jared Baxter / Mbed 2 deprecated Impedance_Fast_Circuitry_print_V_I

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Dependencies:   mbed-dsp mbed

Fork of Impedance_Fast_Circuitry by Jared Baxter

Diff: dma.cpp

Revision:
40:bd6d8c35e822
Parent:
39:82dc3daecf32
Child:
41:3e0623d81b9a
--- a/dma.cpp	Thu Jan 29 16:18:54 2015 +0000
+++ b/dma.cpp	Fri Jan 30 06:16:39 2015 +0000
@@ -16,8 +16,9 @@
  * @len = the length of array1 and array2, and the number of reads the DMA completes
  * */
  
-void dma_init(uint16_t* array0, uint16_t* array1, uint16_t* array2, int len, Serial &pc)
+void dma_init(int len)
 {
+    
     // select round-robin arbitration priority
     DMA_CR |= DMA_CR_ERCA_MASK;
     
@@ -36,11 +37,11 @@
         
     // Set memory address for source and destination for DMA0, DMA1, and DMA2
     DMA_TCD0_SADDR = (uint32_t)&ADC0_RA;
-    DMA_TCD0_DADDR = (uint32_t) array0;
+    DMA_TCD0_DADDR = (uint32_t) sample_array1;
     DMA_TCD1_SADDR = (uint32_t)&ADC1_RA;
-    DMA_TCD1_DADDR = (uint32_t) array1;
+    DMA_TCD1_DADDR = (uint32_t) sample_array2;
     DMA_TCD2_SADDR = (uint32_t)&rotary_count;
-    DMA_TCD2_DADDR = (uint32_t) array2;
+    DMA_TCD2_DADDR = (uint32_t) angle_array;
     
     // Set an offset for source and destination address
     DMA_TCD0_SOFF = 0x00; // Source address offset of 2 bits per transaction
@@ -82,7 +83,7 @@
     DMA_TCD1_CSR = 0;
     DMA_TCD2_CSR = 1;
     
-    pc.printf("DMA_CR: %08x\r\n", DMA_CR);
+    /*pc.printf("DMA_CR: %08x\r\n", DMA_CR);
     pc.printf("DMA_ES: %08x\r\n", DMA_ES);
     pc.printf("DMA_ERQ: %08x\r\n", DMA_ERQ);
     pc.printf("DMA_EEI: %08x\r\n", DMA_EEI);
@@ -96,5 +97,12 @@
     pc.printf("DMA_CINT: %02x\r\n", DMA_CINT);
     pc.printf("DMA_INT: %08x\r\n", DMA_INT);
     pc.printf("DMA_ERR: %08x\r\n", DMA_ERR);
-    pc.printf("DMA_HRS: %08x\r\n", DMA_HRS);
+    pc.printf("DMA_HRS: %08x\r\n", DMA_HRS);*/
 }
+
+void reset_dma() {
+    // Set memory address for destinations back to the beginning
+    DMA_TCD0_DADDR = (uint32_t) sample_array1;
+    DMA_TCD1_DADDR = (uint32_t) sample_array2;
+    DMA_TCD2_DADDR = (uint32_t) angle_array;
+}