195 lines
5.5 KiB
C
195 lines
5.5 KiB
C
/*
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*********************************************************************************************************
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* IAR Development Kits
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* on the
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*
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* Nano130
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*
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* Filename : spi_flash.c
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* Version : V1.00
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* Programmer(s) : Qian Xianghong
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*********************************************************************************************************
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*/
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#include "includes.h"
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// 加速度计ID
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uint8_t Accelero_ID = 0;
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// 运动状态（默认为1，万一加速度计有问题）
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volatile uint8_t Motion_Status = 1;
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// 运动检测：第一次需要定位
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volatile uint8_t Motion_Detected = 1;
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typedef unsigned char uchar;
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typedef unsigned short ushort;
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typedef unsigned int uint;
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//****************************************
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// 定义LIS2DH12内部地址
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//****************************************
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#define CTRL_REG1 0x20
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#define CTRL_REG2 0x21
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#define CTRL_REG3 0x22
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#define CTRL_REG4 0x23
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#define CTRL_REG5 0x24
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#define CTRL_REG6 0x25
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#define ACT_THS 0x3E
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#define ACT_DUR 0x3F
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#define WHO_AM_I 0x0F //地址寄存器(默认数值0x33，只读)
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uchar Single_WriteSPI(uchar REG_Address,uchar REG_data)
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{
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SPI_SET_SS0_LOW(SPI2);
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// Write Address
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SPI_WRITE_TX0(SPI2, REG_Address & 0x3F);
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while(SPI_GET_RX_FIFO_EMPTY_FLAG(SPI2));
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SPI_READ_RX0(SPI2);
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// Write data
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SPI_WRITE_TX0(SPI2, REG_data);
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while(SPI_GET_RX_FIFO_EMPTY_FLAG(SPI2));
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SPI_READ_RX0(SPI2);
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SPI_SET_SS0_HIGH(SPI2);
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return 1;
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}
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uchar Single_ReadSPI(uchar REG_Address, uchar *REG_data)
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{
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SPI_SET_SS0_LOW(SPI2);
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// Read Address
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SPI_WRITE_TX0(SPI2, (REG_Address & 0x3F) | 0x80);
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while(SPI_GET_RX_FIFO_EMPTY_FLAG(SPI2));
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SPI_READ_RX0(SPI2);
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// 提供Clock
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SPI_WRITE_TX0(SPI2, 0);
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while(SPI_GET_RX_FIFO_EMPTY_FLAG(SPI2));
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*REG_data = SPI_READ_RX0(SPI2);
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SPI_SET_SS0_HIGH(SPI2);
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return 1;
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}
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// 读取运动状态
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void Accelero_ReadStatus(uint8_t pf5)
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{
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// 当前运动状态
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Motion_Status = !pf5; // Active low
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printf("\nHard Motion status = %d\n", Motion_Status);
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// 检测到了运动（需要重新定位）
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if(Motion_Status)
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Motion_Detected = 1;
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}
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void Accelero_Handler()
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{
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// 保存键值
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uint8_t pf5 = PF5;
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if(CLK->WK_INTSTS & CLK_WK_INTSTS_PD_WK_IS_Msk)
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{
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// 重新打开看门狗计数器
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WDT->CTL |= WDT_CTL_WTE_Msk;
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}
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// 清除中断标志
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GPIO_CLR_INT_FLAG(PF, BIT5);
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if(CLK->WK_INTSTS & CLK_WK_INTSTS_PD_WK_IS_Msk)
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{
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// 清除中断唤醒标志
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// CLK->WK_INTSTS |= CLK_WK_INTSTS_PD_WK_IS_Msk;
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Vcc_Enable();
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delay_ms(40);
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Wakeup_Sleeping = 0;
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printf("\nWakeup by Accelero ...\n");
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}
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// 读取运动状态
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Accelero_ReadStatus(pf5);
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}
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// 加速度中断处理，本函数被【key.c】模块中【GPDEF_IRQHandler】函数调用
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void Accelero_Init()
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{
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SYS->PD_L_MFP &= ~(SYS_PD_L_MFP_PD0_MFP_Msk | SYS_PD_L_MFP_PD1_MFP_Msk | SYS_PD_L_MFP_PD2_MFP_Msk | SYS_PD_L_MFP_PD3_MFP_Msk);
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SYS->PD_L_MFP |= (SYS_PD_L_MFP_PD0_MFP_SPI2_SS0 | SYS_PD_L_MFP_PD1_MFP_SPI2_SCLK | SYS_PD_L_MFP_PD2_MFP_SPI2_MISO0 | SYS_PD_L_MFP_PD3_MFP_SPI2_MOSI0);
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// 允许外设时钟
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CLK_EnableModuleClock(SPI2_MODULE);
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SYS->PF_L_MFP &= ~SYS_PF_L_MFP_PF5_MFP_Msk;
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SYS->PF_L_MFP |= SYS_PF_L_MFP_PF5_MFP_GPF5;
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GPIO_SetMode(PF, BIT5, GPIO_PMD_INPUT); // INT2
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// 硬件防抖：在key.c中设置
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GPIO_SET_DEBOUNCE_TIME(GPIO_DBCLKSRC_IRC10K, GPIO_DBCLKSEL_256);
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// GPIO_ENABLE_DEBOUNCE(PF, BIT5);
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}
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// 初始化LIS2DH12
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void Accelero_Open()
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{
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/*---------------------------------------------------------------------------------------------------------*/
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/* Init SPI */
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/*---------------------------------------------------------------------------------------------------------*/
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/* Configure SPI2 as a master, SPI clock rate 8 MHz,
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clock idle low, 8-bit transaction, drive output on falling clock edge and latch input on rising edge. */
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SPI_Open(SPI2, SPI_MASTER, SPI_MODE_0, 8, 8000000ul);
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/* Disable the automatic hardware slave selection function. */
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SPI_DisableAutoSS(SPI2);
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SPI_SET_MSB_FIRST(SPI2);
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/* Set TX FIFO threshold, enable TX FIFO threshold interrupt and RX FIFO time-out interrupt */
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SPI_EnableFIFO(SPI2, 1, 1);
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// 打开中断：在key.c中设置
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// NVIC_SetPriority (GPDEF_IRQn, 2);
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// NVIC_EnableIRQ(GPDEF_IRQn);
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/* Interrupt Type: Both Edge */
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if(dcBuff.configDisplay.op_BOX_VER || dcBuff.configDisplay.op_SEND_GPS_DATA)
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GPIO_EnableInt(PF, 5, GPIO_INT_BOTH_EDGE);
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Single_WriteSPI(CTRL_REG1, 0x5F); //控制寄存器，（100Hz， Low-power mode，Enable XYZ）
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Single_WriteSPI(CTRL_REG2, 0x00); //控制寄存器，（High-pass filter disabled）
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Single_WriteSPI(CTRL_REG3, 0x00); //控制寄存器
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Single_WriteSPI(CTRL_REG4, 0x00); //控制寄存器，（4-wire SPI，Self-test disabled, HR=0, FS= ±2g）
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Single_WriteSPI(CTRL_REG5, 0x00); //控制寄存器，（FIFO disabled）
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Single_WriteSPI(CTRL_REG6, 0x08); //控制寄存器，（Enable activity interrupt on INT2 pin）
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// Activate/Inactivate: 门限寄存器，（x 4g/250 mg）
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if(dcBuff.configDisplay.op_SEND_GPS_DATA) // 槽车最灵敏，只在行驶过程中判断
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Single_WriteSPI(ACT_THS, 4);
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else // 罐箱
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Single_WriteSPI(ACT_THS, 20);
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// Activate/Inactivate: 持续时间寄存器
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Single_WriteSPI(ACT_DUR, 40);
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// 读出ID：测试通信是否正常
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Accelero_CheckID();
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}
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// 读出ID放在Accelero_ID(检查加速度计是否正常）
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void Accelero_CheckID()
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{
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// 读出ID：测试通信是否正常
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Single_ReadSPI(WHO_AM_I, &Accelero_ID);
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printf("\nAccelero ID = 0x%02X\n", Accelero_ID);
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if(Accelero_ID == ACCELERO_ID)
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{
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Motion_Status = !PF5;
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printf("\nInit Motion status = %d\n", Motion_Status);
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}
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}
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