龙芯1B ： DHT11温湿度传感器测量实验例程

/* * Copyright (C) 2020-2021 Suzhou Tiancheng Software Ltd. * * SPDX-License-Identifier: Apache-2.0 */ /* * ls1x_gmac.c * * Loongson1x GMAC driver * GMAC work with MII, support 10/100M, fullduplex/halfduplex mode. * * created: 2013/07/01 * author: Bian * */ #include "bsp.h" #if defined(BSP_USE_GMAC0) || defined(BSP_USE_GMAC1) #include <stdio.h> #include <stdlib.h> #include <stdint.h> #include <string.h> #if defined(LS1B) #include "ls1b.h" #include "ls1b_irq.h" #elif defined(LS1C) #include "ls1c.h" #include "ls1c_irq.h" #else #error "No Loongson1x SoC defined!" #endif #if defined(OS_RTTHREAD) #include "rtthread.h" #elif defined(OS_UCOS) #include "os.h" #elif defined(OS_FREERTOS) #include "FreeRTOS.h" #include "event_groups.h" #endif #include "cpu.h" #include "mii.h" #include "ls1x_io.h" #include "drv_os_priority.h" #include "ls1x_gmac_hw.h" #include "ls1x_gmac.h" //*************************************************************************************** #define GMAC_DEBUG 0 // 调试 #define GMAC_TRACE_INFO 1 // print some message //*************************************************************************************** #define LS1x_K0_CACHED 1 #ifdef LS1x_K0_CACHED #define VA_TO_PHYS(x) K1_TO_PHYS(x) #else #define VA_TO_PHYS(x) K0_TO_PHYS(x) #endif #define GMAC_BUF_CACHED 1 // buffer cached #ifndef ETHER_MAX_LEN #define ETHER_MAX_LEN 1518 // should defined by tcp/ip stack #endif #define MAX_BUF_SIZE 1536 // 48*32, reference by ETHER_MAX_LEN=1518 #define DMA_DESC_SIZE 32 #define NUM_TX_DMA_DESC 4 // TX 描述符个数, 和 TX 缓冲区个数一致 #define NUM_RX_DMA_DESC 4 // RX 描述符个数, 和 RX 缓冲区个数一致 #define TX_BUF_SIZE MAX_BUF_SIZE // TX 缓冲区大小 #define RX_BUF_SIZE MAX_BUF_SIZE // RX 缓冲区大小 #define MII_WR_TIMEOUT 0x0200 // mii write timeout #define MII_RD_TIMEOUT 0x0200 // mii read timeout #define GDMA_RESET_TIMEOUT 0x0200 // gdma reset timeout //*************************************************************************************** // Hardware-specific storage, 驱动专用硬件相关的控制结构 //*************************************************************************************** typedef struct { LS1x_gmac_regs_t *hwGMAC; /* GMAC Hardware */ LS1x_gdma_regs_t *hwGDMA; unsigned int phyAddr; /* PHY Address */ unsigned int gmacVersion; /* 设备版本号 */ unsigned int vector; /* GMAC Interrupt Registers */ unsigned int int_ctrlr; unsigned int int_mask; int unitNumber; /* 设备号 */ int acceptBroadcast; /* Indicates configuration */ int autoNegotiation; /* 是否自动协商 */ int autoNegoTimeout; /* 自动协商超时 ms */ unsigned int LinkState; /* Link status as reported by the Phy */ unsigned int DuplexMode; /* Duplex mode of the Phy */ unsigned int Speed; /* Speed of the Phy */ unsigned int descmode; /* DMA Desc Mode chain or ring */ LS1x_rxdesc_t *rx_desc[NUM_RX_DMA_DESC]; /* RX 描述符指针数组 */ LS1x_txdesc_t *tx_desc[NUM_TX_DMA_DESC]; /* TX 描述符指针数组 */ int rx_head; int rx_tail; int tx_head; int tx_tail; unsigned char *rx_buf[NUM_RX_DMA_DESC]; /* RX 缓冲区指针数组 */ unsigned char *tx_buf[NUM_TX_DMA_DESC]; /* TX 缓冲区指针数组 */ #if defined(OS_RTTHREAD) rt_event_t gmac_event; #elif defined(OS_UCOS) OS_FLAG_GRP *gmac_event; #elif defined(OS_FREERTOS) EventGroupHandle_t gmac_event; #endif unsigned int interrupts; /* Statistics 统计数 */ unsigned int dma_normal_intrs; unsigned int dma_abnormal_intrs; unsigned int dma_fatal_err; unsigned int rx_interrupts; unsigned int tx_interrupts; unsigned int rx_pkts; unsigned int rx_buffer_unavailable; unsigned int rx_stopped; unsigned int rx_errors; unsigned int rx_length_err; unsigned int rx_dribit_err; unsigned int rx_dropped; unsigned int tx_pkts; unsigned int tx_buffer_unavailable; unsigned int tx_stopped; unsigned int tx_errors; unsigned int tx_ipheader_err; unsigned int tx_playload_err; unsigned int tx_defered; unsigned int tx_collsions; unsigned int tx_underflow; int timeout; /* 收发超时 */ int initialized; /* 是否初始化 */ int started; /* 是否启动 */ char dev_name[16]; /* 设备名称 */ } GMAC_t; //*************************************************************************************** // ls1x gmac device and buffer //*************************************************************************************** #define __ALIGN(x) __attribute__((aligned(x))) #if defined(BSP_USE_GMAC0) static GMAC_t ls1x_GMAC0 = { #if defined(LS1B) .hwGMAC = (LS1x_gmac_regs_t *)LS1B_GMAC0_BASE, .hwGDMA = (LS1x_gdma_regs_t *)LS1x_GDMA0_BASE, .int_ctrlr = LS1B_INTC1_BASE, .int_mask = INTC1_GMAC0_BIT, .vector = LS1B_GMAC0_IRQ, #elif defined(LS1C) .hwGMAC = (LS1x_gmac_regs_t *)LS1C_MAC_BASE, .hwGDMA = (LS1x_gdma_regs_t *)LS1x_GDMA0_BASE, .int_ctrlr = LS1C_INTC1_BASE, .int_mask = INTC1_MAC_BIT, .vector = LS1C_MAC_IRQ, #endif .unitNumber = 0, .descmode = CHAINMODE, // XXX This is important .timeout = 0, .started = 0, .initialized = 0, .dev_name = "gmac0", .acceptBroadcast = 0, .autoNegotiation = 1, .autoNegoTimeout = 3000, }; void *devGMAC0 = (void *)&ls1x_GMAC0; static unsigned char tx_desc_0[(NUM_TX_DMA_DESC*DMA_DESC_SIZE)] __ALIGN(32); static unsigned char rx_desc_0[(NUM_RX_DMA_DESC*DMA_DESC_SIZE)] __ALIGN(32); static unsigned char tx_buf_0[(NUM_TX_DMA_DESC*TX_BUF_SIZE)] __ALIGN(32); static unsigned char rx_buf_0[(NUM_RX_DMA_DESC*RX_BUF_SIZE)] __ALIGN(32); #endif #if defined(BSP_USE_GMAC1) static GMAC_t ls1x_GMAC1 = { .hwGMAC = (LS1x_gmac_regs_t *)LS1B_GMAC1_BASE, .hwGDMA = (LS1x_gdma_regs_t *)LS1B_GDMA1_BASE, .int_ctrlr = LS1B_INTC1_BASE, .int_mask = INTC1_GMAC1_BIT, .vector = LS1B_GMAC1_IRQ, .unitNumber = 1, .descmode = CHAINMODE, // XXX This is important .timeout = 0, .started = 0, .initialized = 0, .dev_name = "gmac1", .acceptBroadcast = 0, .autoNegotiation = 1, .autoNegoTimeout = 3000, }; void *devGMAC1 = (void *)&ls1x_GMAC1; static unsigned char tx_desc_1[(NUM_TX_DMA_DESC*DMA_DESC_SIZE)] __ALIGN(32); static unsigned char rx_desc_1[(NUM_RX_DMA_DESC*DMA_DESC_SIZE)] __ALIGN(32); static unsigned char tx_buf_1[(NUM_TX_DMA_DESC*TX_BUF_SIZE)] __ALIGN(32); static unsigned char rx_buf_1[(NUM_RX_DMA_DESC*RX_BUF_SIZE)] __ALIGN(32); #endif //*************************************************************************************** // function prototypes //*************************************************************************************** static int LS1x_init_tx_desc_queue(GMAC_t *pMAC); static int LS1x_init_rx_desc_queue(GMAC_t *pMAC); static void LS1x_GMAC_init_hw(GMAC_t *pMAC, unsigned char *macAddr); static void LS1x_GMAC_irq_handler(int vector, void *arg); static void LS1x_GMAC_do_reset(GMAC_t *pMAC); //*************************************************************************************** // functions for gdma desc //*************************************************************************************** static inline void GDMA_INIT_RXDESC(GMAC_t *pMAC) { LS1x_init_rx_desc_queue(pMAC); pMAC->rx_head = 0; pMAC->rx_tail = 0; } static inline void GDMA_INIT_TXDESC(GMAC_t *p