eb001/tb/sw/src/MstMain.c

#include <stdint.h>
#include "tl2cdr.h"
#include "mstMainCfg.h"
#include "sysDef.h"

volatile uint32_t *const plic_priority = (uint32_t *)(0xc000000U);

volatile uint32_t *plic_pending_0_31 = (uint32_t*)( 0xc000000U + 0X001000 );
volatile uint32_t *plic_enable_0_31  = (uint32_t*)( 0xc000000U + 0X002000 );

volatile uint32_t *plic_threshold_0  = (uint32_t*)( 0xc000000U + 0X200000 );
volatile uint32_t *plic_claim        = (uint32_t*)( 0xc000000U + 0X200004 );

uint8_t MST_TX_BUF[TX_BUF_NUM * TX_BUF_MAX_LEN] __attribute__((aligned(32)));
uint8_t MST_RX_BUF[RX_BUF_NUM * RX_BUF_MAX_LEN] __attribute__((aligned(32)));

static inline void error() {
    while(1);
}


extern const uint8_t int_svr_code[];
uint32_t (*sys_call)(uint32_t no, ...);
void main()
{
	int i;

	/*初始化plic*/
	*plic_enable_0_31 =   1 << CDR_INT_TX0END
						//| 1 << CDR_INT_TX1END

						//| 1 << CDR_INT_RX0ERROR
						| 1 << CDR_INT_RX1ERROR

						//| 1 << CDR_INT_RX0START
						| 1 << CDR_INT_RX1START

						//| 1 << CDR_INT_RX0END
						| 1 << CDR_INT_RX1END

						| 1 << CDR_INT_TX0_FIFO_DEQ
						//| 1 << CDR_INT_TX1_FIFO_DEQ

						//| 1 << CDR_INT_RX0_FIFO_ENQ
						| 1 << CDR_INT_RX1_FIFO_ENQ
						;

	plic_priority[CDR_INT_TX0END] = 1;
	plic_priority[CDR_INT_TX1END] = 1;
	plic_priority[CDR_INT_RX0ERROR] = 1;
	plic_priority[CDR_INT_RX1ERROR] = 1;
	plic_priority[CDR_INT_RX0START] = 1;
	plic_priority[CDR_INT_RX1START] = 1;
	plic_priority[CDR_INT_RX0END] = 1;
	plic_priority[CDR_INT_RX1END] = 1;
	plic_priority[CDR_INT_TX0_FIFO_DEQ] = 1;
	plic_priority[CDR_INT_TX1_FIFO_DEQ] = 1;
	plic_priority[CDR_INT_RX0_FIFO_ENQ] = 1;
	plic_priority[CDR_INT_RX1_FIFO_ENQ] = 1;

	*plic_threshold_0 = 0;

	#if 0
	//再写一次实现延迟，等从机的复位完成
	*plic_enable_0_31 = 1 << CDR_INT_TXEND | 1 << CDR_INT_RXERROR | 1 << CDR_INT_RXSTART | 1 << CDR_INT_RXEND;
	*plic_priority_TxEnd   = 1;
	*plic_priority_RxError = 1;
	*plic_priority_RxStart = 1;
	*plic_priority_RxEnd   = 1;
	*plic_threshold_0 = 0;	
	#else
	//延迟等待从机复位，初始化
	for (i = 0; i < 100; i++)
		asm volatile("nop");

	#endif

	//while (init_svr_code() != 1);

	sys_call = (void *)int_svr_code;


	//复位脉冲
	*tx0_softReset = 1;
	*tx1_softReset = 1;
	*rx0_softReset = 1;
	*rx1_softReset = 1;


	//tx0   下行
	//tx1	上行
	//rx0	下行
	//rx1	上行
	uint32_t tx_len;
	
	tx_len = 32;

	for (i = 0; i < tx_len - 1; i++)
	{
		MST_TX_BUF[i] = i;
	}

	sys_call(SYS_SET_RECV_INFO, MST_RX_BUF);
	sys_call(SYS_SEND_DATA, MST_TX_BUF, tx_len);


	while (1);


	#if 0
	*cdr_txLen = 520; //总长520
	*cdr_txFifo = (512 << 20) |( 0 << 16) | 0x0000; //负载长度512，操作数0， 参数全0
	*cdr_txFifo = 0x00000000;

		for( uint32_t i = 0; i < 512/4 - 1; i ++ ){
			*cdr_txFifo = 0x00000000;
		}
		crc = *cdr_txCrc;
		*cdr_txFifo = crc;

		//等待发送完成标志
								// asm volatile (
								// 	"1:\n"
								// 	"andi %0, sp, 0x01\n"
								// 	"beqz %0, 1b\n"
								// 	"andi sp, sp, 0xFE\n"
								// 	:"+r"(flag)
								// );

		while( !flag_intTxEnd );
		flag_intTxEnd = 0;





		*cdr_softReset = 1; //复位脉冲
		*cdr_direct = 1;    //方向切换上行

		//接收第一个包
									// asm volatile (
									// 	"1:\n"
									// 	"andi %0, sp, 0x04\n"
									// 	"beqz %0, 1b\n"
									// 	"andi sp, sp, 0xFB\n"
									// 	:"+r"(flag)
									// );
		while(!flag_intRxStart);
		flag_intRxStart = 0;
				
		readDat = *cdr_rxFifo;	



		// operator = (readDat >> 16) & 0xf; //速度不够，不校验
		upRecvLen = readDat >> 20;


		//接收第二个包
									// asm volatile (
									// 	"andi %0, sp, 0x08\n"
									// 	"1:\n"
									// 	"bnez %0, 1b\n" //error //速度不够，不校验
									// :"+r"(flag),
									// );
		if( flag_intRxError ){
			while(1);
		}

		uint32_t temp = *cdr_rxFifo;

		//上行转发负载
		for( uint32_t i = 0; i < (upRecvLen >> 2); i ++ ){ //一次传4byte

			if( flag_intRxError ){
				while(1);
			}
												// register uint32_t upData;
												// asm volatile (
												// 	"andi %0, sp, 0x80\n"
												// 	"1:\n"
												// 	"bnez %0, 1b\n" //error 速度不够，不再检查接收
												// 	"lw %1, 0x01c(x0)\n"
												// 	:"+r"(flag), "+r"(upData)
												// );
		}

		//CRC
		if( flag_intRxError ){
			while(1);
		}
												// asm volatile (
												// 	"andi %0, sp, 0x08\n"
												// 	"1:\n"
												// 	"bnez %0, 1b\n" //error
												// 	:"+r"(flag)
												// );
		//uint32_t crc = *cdr_rxFifo; //CRC

		//等待接收完成标志
												// asm volatile (
												// 	"1:\n"
												// 	"andi %0, sp, 0x08\n"
												// 	"beqz %0, 1b\n"
												// 	"andi sp, sp, 0xF7\n"
												// 	:"+r"(flag)
												// );
		
		while(!flag_intRxEnd);
		flag_intRxEnd = 0;

		totNum = (upRecvLen >> 3);
	#endif

}