117 lines
4.9 KiB
C
117 lines
4.9 KiB
C
/**
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* \file
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* DMA driver header
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* \author
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* Original: Martti Huttunen <martti@sensinode.com>
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* Port: Zach Shelby <zach@sensinode.com>
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*/
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#ifndef __DMA_H
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#define __DMA_H
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#include "cc2430_sfr.h"
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/** DMA triggers */
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typedef enum dma_trigger_t
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{
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DMA_T_NONE=0, /*!<DMA No trigger, setting DMAREQ.DMAREQx bit starts transfer*/
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DMA_T_PREV=1, /*!<DMA DMA channel is triggered by completion of previous channel*/
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DMA_T_T1_CH0=2, /*!<Timer 1 Timer 1, compare, channel 0*/
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DMA_T_T1_CH1=3, /*!<Timer 1 Timer 1, compare, channel 1*/
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DMA_T_T1_CH2=4, /*!<Timer 1 Timer 1, compare, channel 2*/
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DMA_T_T2_COMP=5, /*!<Timer 2 Timer 2, compare*/
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DMA_T_T2_OVFL=6, /*!<Timer 2 Timer 2, overflow*/
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DMA_T_T3_CH0=7, /*!<Timer 3 Timer 3, compare, channel 0*/
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DMA_T_T3_CH1=8, /*!<Timer 3 Timer 3, compare, channel 1*/
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DMA_T_T4_CH0=9, /*!<Timer 4 Timer 4, compare, channel 0*/
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DMA_T_T4_CH1=10, /*!<Timer 4 Timer 4, compare, channel 1*/
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DMA_T_ST=11, /*!<Sleep Timer Sleep Timer compare*/
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DMA_T_IOC_0=12, /*!<IO Controller Port 0 I/O pin input transition*/
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DMA_T_IOC_1=13, /*!<IO Controller Port 1 I/O pin input transition*/
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DMA_T_URX0=14, /*!<USART0 USART0 RX complete*/
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DMA_T_UTX0=15, /*!<USART0 USART0 TX complete*/
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DMA_T_URX1=16, /*!<USART1 USART1 RX complete*/
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DMA_T_UTX1=17, /*!<USART1 USART1 TX complete*/
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DMA_T_FLASH=18, /*!<Flash controller Flash data write complete*/
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DMA_T_RADIO=19, /*!<Radio RF packet byte received/transmit*/
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DMA_T_ADC_CHALL=20, /*!<ADC ADC end of a conversion in a sequence, sample ready*/
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DMA_T_ADC_CH11=21, /*!<ADC ADC end of conversion channel 0 in sequence, sample ready*/
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DMA_T_ADC_CH21=22, /*!<ADC ADC end of conversion channel 1 in sequence, sample ready*/
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DMA_T_ADC_CH32=23, /*!<ADC ADC end of conversion channel 2 in sequence, sample ready*/
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DMA_T_ADC_CH42=24, /*!<ADC ADC end of conversion channel 3 in sequence, sample ready*/
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DMA_T_ADC_CH53=25, /*!<ADC ADC end of conversion channel 4 in sequence, sample ready*/
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DMA_T_ADC_CH63=26, /*!<ADC ADC end of conversion channel 5 in sequence, sample ready*/
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DMA_T_ADC_CH74=27, /*!<ADC ADC end of conversion channel 6 in sequence, sample ready*/
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DMA_T_ADC_CH84=28, /*!<ADC ADC end of conversion channel 7 in sequence, sample ready*/
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DMA_T_ENC_DW=29, /*!<AES AES encryption processor requests download input data*/
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DMA_T_ENC_UP=30, /*!<AES AES encryption processor requests upload output data*/
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DMA_T_RES=31
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}dma_trigger_t;
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/** variable DMA length modes */
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typedef enum dma_vlen_t
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{
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DMA_VLEN_LEN = (0 << 5),/*!<Use LEN for transfer count*/
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DMA_VLEN_N1 = (1 << 5),/*!<Transfer the number of bytes/words specified by first byte/word + 1 (up to a maximum specified by LEN). Thus transfer count excludes length byte/word.*/
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DMA_VLEN_N = (2 << 5),/*!<Transfer the number of bytes/words specified by first byte/word (up to a maximum specified by LEN). Thus transfer count includes length byte/word.*/
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DMA_VLEN_N2 = (3 << 5),/*!<Transfer the number of bytes/words specified by first byte/word + 2 (up to a maximum specified by LEN).*/
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DMA_VLEN_N3 = (4 << 5),/*!<Transfer the number of bytes/words specified by first byte/word + 3 (up to a maximum specified by LEN).*/
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DMA_VLEN_RES1 = (5 << 5),/*!<reserved*/
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DMA_VLEN_RES2 = (6 << 5),/*!<reserved*/
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DMA_VLEN_LEN2 = (7 << 5) /*!<Use LEN for transfer count*/
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}dma_vlen_t;
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/** address increment modes */
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typedef enum dma_inc_t
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{
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DMA_NOINC = 0, /*!<No increment*/
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DMA_INC = 1, /*!<Increment*/
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DMA_INC2 = 2, /*!<Increment 2*/
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DMA_DEC = 3 /*!<Decrement*/
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}dma_inc_t;
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/** transfer types */
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typedef enum dma_type_t
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{
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DMA_SINGLE = 0, /*!<Single*/
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DMA_BLOCK = 1, /*!<Block*/
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DMA_RPT = 2, /*!<Repeated single*/
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DMA_BLOCK_RPT=3 /*!<Repeated block*/
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}dma_type_t;
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/** DMA configuration structure */
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typedef struct dma_config_t
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{
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uint8_t src_h; /*!<source address high byte*/
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uint8_t src_l; /*!<source address low byte*/
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uint8_t dst_h; /*!<dest. address high byte*/
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uint8_t dst_l; /*!<dest. address low byte*/
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uint8_t len_h; /*!<transfer mode in high 3 bits, length high byte, 4 lowest bits*/
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uint8_t len_l; /*!<length low byte*/
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uint8_t t_mode; /*!<transfer mode: bit7=word mode, 6-5=block/single 4-0=trigger */
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uint8_t addr_mode; /*!<address mode: 7-6=src inc, 5-4=dst_inc, 3=IRQ, 2=M8(vlen) 1-0:priority*/
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}dma_config_t;
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extern void dma_init(void);
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typedef void (*dma_func)(void *);
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extern dma_config_t dma_conf[4];
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#ifdef HAVE_DMA
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typedef uint8_t xDMAHandle;
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extern xDMAHandle dma_config(uint8_t channel, void *src, dma_inc_t src_inc, void *dst, dma_inc_t dst_inc,
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uint16_t length, dma_vlen_t vlen_mode, dma_type_t t_mode,
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dma_trigger_t trigger, struct process * p);
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extern uint8_t dma_arm(xDMAHandle channel);
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extern uint8_t dma_abort(xDMAHandle channel);
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extern uint8_t dma_trigger(xDMAHandle channel);
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extern uint8_t dma_state(xDMAHandle channel);
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void dma_config_print(xDMAHandle channel);
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#endif
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extern void dma_ISR( void ) __interrupt (DMA_VECTOR);
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#endif /*__DMA_H*/
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