added DMA driver channel0 - fixes #35

eslamdyab21 · Apr 29, 2023 · 0019870 · 0019870
1 parent 423d179
commit 0019870
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Showing 4 changed files with 107 additions and 0 deletions.
diff --git a/MCAL_Drivers/DMA/include/DMA_config.h b/MCAL_Drivers/DMA/include/DMA_config.h
@@ -0,0 +1,14 @@
+/*****************************************/
+/* Author  :  Gehad Elkoumy              */
+/* Version :  V01                        */
+/* Date    :  23 April 2023              */
+/*****************************************/
+
+#ifndef DMA_CONFIG_H
+#define DMA_CONFIG_H
+
+/* Options : channels from 1 to 7 */
+//#define channelID   1
+
+
+#endif
diff --git a/MCAL_Drivers/DMA/include/DMA_interface.h b/MCAL_Drivers/DMA/include/DMA_interface.h
@@ -0,0 +1,13 @@
+/*****************************************/
+/* Author  :  Gehad Elkoumy              */
+/* Version :  V01                        */
+/* Date    :  23 April 2023              */
+/*****************************************/
+
+#ifndef DMA_INTERFACE_H_
+#define DMA_INTERFACE_H_
+
+void MDMA_voidChannel1Init(void);
+void MDMA_voidChannel1Start(u32 *Copy_Pointeru32SourceAddress, u32 *Copy_Pointer32DestinationAddress, u16 Copy_u16BlockLength);
+
+#endif
diff --git a/MCAL_Drivers/DMA/include/DMA_private.h b/MCAL_Drivers/DMA/include/DMA_private.h
@@ -0,0 +1,32 @@
+/*****************************************/
+/* Author  :  Gehad Elkoumy              */
+/* Version :  V01                        */
+/* Date    :  23 April 2023              */
+/*****************************************/
+
+#ifndef DMA_PRIVATE_H_
+#define DMA_PRIVATE_H_
+
+/*Array for 7 channels*/
+typedef struct
+{
+	volatile u32 CCR;
+	volatile u32 CNDTR;
+	volatile u32 CPAR;
+	volatile u32 CMAR;
+	volatile u32 Reserved;
+}DMA_Channel;
+
+typedef struct
+{
+	/*flags for the 7 channels*/
+	volatile u32 ISR;
+	volatile u32 IFCR;
+
+	/*each register is an array of 7 elements(each channel has a register)*/
+	DMA_Channel Channel[7];
+}DMA_t;
+
+#define 	DMA		((volatile DMA_t*)0x40020000)
+
+#endif
diff --git a/MCAL_Drivers/DMA/src/DMA_program.c b/MCAL_Drivers/DMA/src/DMA_program.c
@@ -0,0 +1,48 @@
+/*****************************************/
+/* Author  :  Gehad Elkoumy              */
+/* Version :  V01                        */
+/* Date    :  23 April 2023              */
+/*****************************************/
+
+#include "STD_TYPES.h"
+#include "BIT_MATH.h"
+
+#include "DMA_interface.h"
+#include "DMA_private.h"
+#include "DMA_config.h"
+
+void MDMA_voidChannel1Init(void)
+{
+	/* channel priority level is low */
+	/* Memory size of 16-bits */
+	SET_BIT(DMA->Channel[0].CCR , 10);
+	CLR_BIT(DMA->Channel[0].CCR , 11);
+
+	/* Peripheral size of 16-bits */
+	SET_BIT(DMA->Channel[0].CCR , 8);
+	CLR_BIT(DMA->Channel[0].CCR , 9);
+
+	/* Enable memory increment mode */
+	SET_BIT(DMA->Channel[0].CCR , 7);
+
+	/* Enable circular mode */
+	SET_BIT(DMA->Channel[0].CCR , 5);
+
+}
+
+
+void MDMA_voidChannel1Start(u32 *Copy_Pointer32SourceAddress, u32 *Copy_Pointeru32DestinationAddress, u16 Copy_u16BlockLength)
+{
+	/* channel must be disabled first */
+	CLR_BIT(DMA->Channel[0].CCR , 0);
+
+	/*Load the source & destination addresses*/
+	DMA->Channel[0].CPAR = Copy_Pointer32SourceAddress;
+	DMA->Channel[0].CMAR = Copy_Pointeru32DestinationAddress;
+
+	/*Load the block length*/
+	DMA->Channel[0].CNDTR = Copy_u16BlockLength;
+
+	/*Enable channel*/
+	SET_BIT(DMA->Channel[0].CCR , 0);
+}