ARM三级必过答案simon

1、1.1-GPIO操作#define GPIO_Pin_3 (uint16_t)0x0008) #define GPIO_Pin_4 (uint16_t)0x0010) 这里要使用3，4脚，找到路径，在#define GPIO_Pin_1 (uint16_t)0x0002) #define GPIO_Pin_2 (uint16_t)0x0004)下面添加3，4为1时就是0008和00101.1.2#define GPIO_Pin_7 (uint16_t)0x0080)#define GPIO_Pin_13 (uint16_t)0x2000)同上第7，13位为11.1.3 GPIO_InitStr

2、ucture.GPIO_Mode = GPIO_Mode_Out_PP ; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 实现GPIO在推挽模式和输出最大速度为50MHz 1.1.4 STM_EVAL_LEDOn(LED1); Delay(0xAFFFF); STM_EVAL_LEDOn(LED2);Delay(0xAFFFF); STM_EVAL_LEDOn(LED3); Delay(0xAFFFF);STM_EVAL_LEDOn(LED4); Delay(0xAFFFF); 函数STM_EVAL_LEDOn(LED):实现LED点亮1.

3、1.5 STM_EVAL_LEDOn(LED1); Delay(0xAFFFF); STM_EVAL_LEDOn(LED2); Delay(0xAFFFF); STM_EVAL_LEDOn(LED3); Delay(0xAFFFF); STM_EVAL_LEDOn(LED4); Delay(0xAFFFF); /* Turn off */STM_EVAL_LEDOff(LED1);Delay(0xAFFFF);STM_EVAL_LEDOff(LED2);Delay(0xAFFFF);STM_EVAL_LEDOff(LED3);Delay(0xAFFFF);STM_EVAL_LEDOff(LED

4、4);Delay(0xAFFFF);函数STM_EVAL_LEDOn(LED):实现LED点亮函数STM_EVAL_LEDOff(LED)：实现LED关闭1.1.6 STM_EVAL_LEDOff(LED3); Delay(0xAFFFF);STM_EVAL_LEDOff(LED4);函数STM_EVAL_LEDOff(LED)：实现LED关闭为了看清加个延时 1.1.7STM_EVAL_LEDOff(LED2);STM_EVAL_LEDOff(LED4); 函数STM_EVAL_LEDOff(LED)：实现LED关闭1.1.8STM_EVAL_LEDOn(LED3); Delay(0xAFF

5、FF); STM_EVAL_LEDOff(LED3);Delay(0xAFFFF); STM_EVAL_LEDOn(LED4);STM_EVAL_LEDOff(LED4);按要求点亮1.1.9STM_EVAL_LEDOn(LED1);Delay(0xAFFFF); STM_EVAL_LEDOff(LED1);STM_EVAL_LEDOn(LED3); Delay(0xAFFFF); STM_EVAL_LEDOff(LED3);按要求点亮 1.1.10 Delay(0xFFFFFF); STM_EVAL_LEDOn(LED1); Delay(0xFFFFFF); STM_EVAL_LEDOff(

6、LED1); STM_EVAL_LEDOn(LED3); STM_EVAL_LEDOff(LED3);按要求点亮1.2-中断控制器使用方法 TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);直接copy下面的TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE); 1.2.2 NVIC_InitStructure.NVIC_IRQChannel = 28; /考试要求正确修改 Word中tim2是通道28，编译有下面NVIC_IRQChannelPreemptionPriority转到宏定义有个uint8_t NVIC_IRQChann

7、el;1.2.3 NVIC_InitStructure.NVIC_IRQChannel = 29; Word中tim3是通道29，编译有下面NVIC_IRQChannelPreemptionPriority转到宏定义有个uint8_t NVIC_IRQChannel;1.2.4 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelPreemption

8、Priority = 2;Word中NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority:优先级配置1.2.5 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; Word中TIM2拥有抢占优先级0，响应优先级0；TIM3拥有抢占优先级1，响应优先级1；TIM4拥有抢占优先级2，响应优先级0。 NVIC_InitStructure.NVIC_IRQChannelSubPriori

9、ty = 0; 1.2.6 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2; NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;Word里面有两大窜，使其拥有抢占优先级2，响应优先级01.2.7NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;1.2.8/* Enable the USARTy_DMA1_IRQn Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = 16; 编译进入上面注解USAR

10、Ty_DMA1_IRQn可以看到使用16通道，前半部分下面有 1.2.9/* Toggle LED3 */ STM_EVAL_LEDToggle(LED3); Word有个函数STM_EVAL_LEDToggle(LEDx):LEDx状态翻转上面注解有led3 1.2.10 /* Toggle LED32*/ STM_EVAL_LEDToggle(LED2); Word有个函数STM_EVAL_LEDToggle(LEDx):LEDx状态翻转上面注解有led21.3-PWM脉冲宽度调制 printf(PWM Frequency 36KHzn); word中已知TIMX3CLK36MHz，分频系

11、数Prescaler=0，l TIM3的时钟频率: TIM3 counter clock=TIM3CLK/(Prescaler + 1)。l TIM3的频率: Frequence=TIM3 counter clock/(TIM3_ARR+1)程序中tim3_arrshi 999，所以最后36khz 1.3.2 printf(PWM Frequency 18KHzn); word中已知TIMX3CLK36MHz，分频系数Prescaler=1，l TIM3的时钟频率: TIM3 counter clock=TIM3CLK/(Prescaler + 1)。l TIM3的频率: Frequence=

12、TIM3 counter clock/(TIM3_ARR+1)程序中tim3_arrshi 999，所以最后18khz1.3.3 printf(PWM Frequency 12KHzn); word中已知TIMX3CLK36MHz，分频系数Prescaler=2，l TIM3的时钟频率: TIM3 counter clock=TIM3CLK/(Prescaler + 1)。l TIM3的频率: Frequence=TIM3 counter clock/(TIM3_ARR+1)程序中tim3_arrshi 999，所以最后12khz1.3.4 printf(PC.08:TIM3_CH3 25%n

13、); printf(PC.09:TIM3_CH4 12.5%n); word1.3.5 printf(PC.06:TIM3_CH1 12.5%n); printf(PC.07:TIM3_CH2 22.5%n); printf(PC.08:TIM3_CH3 52.5%n); printf(PC.09:TIM3_CH4 60%n); 1.3.6/* Channel1 configuration */ TIM_SelectOCxM(TIM1, TIM_Channel_1, TIM_OCMode_PWM1); TIM_CCxCmd(TIM1, TIM_Channel_1, TIM_CCx_Enable

14、); TIM_CCxNCmd(TIM1, TIM_Channel_1, TIM_CCxN_Disable); /* Channel3 configuration */ TIM_SelectOCxM(TIM1, TIM_Channel_3, TIM_OCMode_PWM1); TIM_CCxCmd(TIM1, TIM_Channel_3, TIM_CCx_Disable); TIM_CCxNCmd(TIM1, TIM_Channel_3, TIM_CCxN_Enable); /* Channel2 configuration */ TIM_CCxCmd(TIM1, TIM_Channel_2,

15、TIM_CCx_Disable); TIM_CCxNCmd(TIM1, TIM_Channel_2, TIM_CCxN_Disable);step=1;就是copy上面5的通道3不变，1，2，对换，之后复位step=1；（213的顺序两行这里通道2两行，3通道TIM_CCx后几个都是Disable）1.3.7 /* Channel3 configuration */ TIM_SelectOCxM(TIM1, TIM_Channel_3, TIM_OCMode_PWM1); TIM_CCxCmd(TIM1, TIM_Channel_3, TIM_CCx_Disable); TIM_CCxNCmd

16、(TIM1, TIM_Channel_3, TIM_CCxN_Enable); /* Channel1 configuration */ TIM_CCxCmd(TIM1, TIM_Channel_1, TIM_CCx_Disable); TIM_CCxNCmd(TIM1, TIM_Channel_1, TIM_CCxN_Disable); /* Channel2 configuration */ TIM_SelectOCxM(TIM1, TIM_Channel_2, TIM_OCMode_PWM1); TIM_CCxCmd(TIM1, TIM_Channel_2, TIM_CCx_Enable

17、); TIM_CCxNCmd(TIM1, TIM_Channel_2, TIM_CCxN_Disable); step+; 213的顺序两行这里通道1两行，就是copy上面4的通道2不变，1，3，对换，之后step+;1.3.8 /* Channel3 configuration */ TIM_CCxCmd(TIM1, TIM_Channel_3, TIM_CCx_Disable); TIM_CCxNCmd(TIM1, TIM_Channel_3, TIM_CCxN_Disable); /* Channel1 configuration */ TIM_SelectOCxM(TIM1, TIM_

18、Channel_1, TIM_OCMode_PWM1); TIM_CCxCmd(TIM1, TIM_Channel_1, TIM_CCx_Disable); TIM_CCxNCmd(TIM1, TIM_Channel_1, TIM_CCxN_Enable); /* Channel2 configuration */ TIM_SelectOCxM(TIM1, TIM_Channel_2, TIM_OCMode_PWM1); TIM_CCxCmd(TIM1, TIM_Channel_2, TIM_CCx_Enable); TIM_CCxNCmd(TIM1, TIM_Channel_2, TIM_C

19、CxN_Disable); step+; 213的顺序两行这里通道3两行，这里标2，就是通道2，3对换1不变，之后step+;1.4-ADC模拟数字转换器设计ADCx-CR1=(uint32_t)0x00000100;Word中ADC的工作方式为独立模式位19到16为0一共32位即 (uint32_t)0x00000000) 使能扫描模式。位8为1就是0x000001001.4.2ADC_InitStructure.ADC_Mode=ADC_Mode_Independent;在独立模式下先编译从下面ADC_ExternalTrigConv_None;转到宏定义区，上面找到独立模式#define

20、 ADC_Mode_Independent (uint32_t)0x00000000)就ok1.4.3ADC_InitStructure.ADC_Mode=ADC_Mode_Independent; 独立模式下转一下就看到了ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; 连续执行转换是否使能就好ADC_InitStructure.ADC_NbrOfChannel = 1; 且被转换的ADC通道数为1。1.4.4ADC_InitStructure.ADC_Mode=ADC_Mode_Independent;ADC_InitStructure.

21、ADC_ContinuousConvMode = DISABLE;单次转换ADC_InitStructure.ADC_NbrOfChannel = 1;1.4.5ADC_InitStructure.ADC_DataAlign=ADC_DataAlign_Right;ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; 连续转换从ADC_Mode_Independent;转到宏定义区在下面找到对齐方式#define ADC_DataAlign_Right (uint32_t)0x00000000)1.4.6ADC_InitStructure.ADC

22、_ContinuousConvMode = ENABLE; 连续转换ADC_InitStructure.ADC_DataAlign=ADC_DataAlign_Left;从ADC_Mode_Independent;转到宏定义区在下面找到对齐方式#define ADC_DataAlign_Left (uint32_t)0x00000800)1.4.7printf(ADC rusult: %3.2fVr,(float)(ADCConvertedValue)/0xfff*3.21);word中数据传输到ADC_ConvertedValue变量中就他1.4.8ADC_SoftwareStartConv

23、Cmd(ADC1, ENABLE);程序上面注解/* Start ADC1 Software Conversion */使能ADC1实现模数转换1.4.9printf(ADCValue: %3.2fVr,(float)(ADCConvertedValue)/0xfff*3.21);ADC_ConvertedValue变量中 03.21V；ADC精度为12位1.4.10 ADC1，ADC_Channel_16 参数ADCx：ADC序号x参数ADC_Channel_x：ADC通道x1.5-DAC模拟数据转换器设计DAC_InitStructure.DAC_WaveGeneration =DAC_W

24、aveGeneration_Noise;不知道要填什么，进入DAC_Trigger_Software，找到一个噪声就ok1.5.2DAC_SetChannel1Data(DAC_Align_12b_L, 0x7FF0); word中数据为2047时转换16进制就是0x7ff0，后四位保留1.5.3DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_Triangle;生成三角波编译进入DAC_Trigger_T2_TRGO;因为类型一样定义就在一起下面有个#define DAC_WaveGeneration_Triangle 就是三

25、角波1.5.4DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude =(uint32_t)0x00000A80; 幅值为2047就是位11到位8为1010为A，位7到位6，使能三角波10为8，加起来就是A801.5.5 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&Escalator8bit;取寄存器地址前面有个const uint8_t Escalator8bit6= 0x0, 0x33,0x66,0x99,0xCC,0xFF;不懂1.5.6DAC_InitStructure.DAC_Wav

26、eGeneration =(uint32_t)0x00000000; 编译，从DAC_Trigger_T6_TRGO;转到定义上面有个#define DAC_Trigger_None (uint32_t)0x00000000)把后面的十六进制填进去就好，连续传输到数据移位寄存器1.5.71，DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bits11_0;word线性反馈移位寄存器LFSR长度为12位编译从下面DAC_Trigger_Software;转到找设置位的，12位就是DAC_LFSRUnmask_

27、Bits11_0;2，DAC_SetChannel1Data(DAC_Align_12b_L,0x5FF0);word里面DAC_SetChannel1Data(参数1, 参数2)：设置通道1的数据寄存器函数一般为左对齐就是DAC_Align_12b_L，后一个参数就是0x5FF01.5.8DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude =DAC_TriangleAmplitude_2047;Word中产生2047幅度波，这里波幅就是2047，但不知道怎么写就先编译从下面的DAC_OutputBuffer_Disable;转到宏定义区找到D

28、AC_TriangleAmplitude_2047;1.5.9DAC_SetDualChannelData(DAC_Align_12b_R, 0x111, 0x111);Word 中DAC_SetDualChannelData（参数1，参数2，参数3）：设置双通道DAC数据函数，后面两个值有VREF*（DHRx / 4095）= VREF/15算出dhrx=273化为十六进制为0x111，还是直接记住比较好1.5.10DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_LFSRUnmask_Bits8_0;Word移位寄存器LFSR

29、长度为9位从下面DAC_Trigger_Software;转到找宏定义区，9位就是#define DAC_LFSRUnmask_Bits8_0 (uint32_t)0x00000800)2.1-SPI串行外设接口设计(温湿度）SHT75_DAT_L;word中DATA翻转为低电平上面就有SHT75_DAT_LSHT75_CLK_L; SCK变为低电平上面就有SHT75_CLK_Lsht11_Delay();SHT75_CLK_H;随后是在SCK时钟高电平时DATA翻转为高电平2.1.2SHT75_DAT_L; DATA翻转为低电平SHT75_DAT_H; DATA翻转为高电平word中有2.1

30、.3SHT75_DAT_H;SCK变为低电平，随后是在SCK时钟高电平时DATA翻转为高电平SHT75_CLK_H; SCK时钟高电平时DATA翻转为低电平2.1.4SHT75_DAT_H; word当SCK时钟高电平时DATA翻转为低电平相反就是高SHT75_CLK_L; 要想翻转，下面有个clkH那这里就必须是_CLK_L;2.1.5 temp_val|= tmp_byte; 就是把上面CACU_CRC = Table(CACU_CRCtmp_byte); tmp_byte给这个变量2.1.6 temp_val |= tmp_byte8; temp_val是16位，存放两个8位，先放高8位

31、2.1.7 *t= temp_val; 定义了一个指针取已经采集到的温度2.1.8 hum_val |= tmp_byte8; 程序下面有tmp_byte = s_Read_SHT11_Byte(); /读取高8位 CACU_CRC = Table(CACU_CRCtmp_byte); /进行第二次CRC temp_val |= tmp_byte4, IntegScal1000, LightIntensity0, LightIntensity1, T); 程序下面直接copy过来2.2.8Word中正确实现SlaveAddressVDD的地址映射#defineSlaveAddressVDD0x

32、49模仿下面的，word中1001001就是ox492.2.9有个路径：Address.h。找不到在左侧light文件右击添加文档，加进来就ok #defineSlaveAddressVDD0x49 Lux=CalculateLux(GainSetHigh4, IntegScal1000, LightIntensity0, LightIntensity1, T);下面有一模一样的2.2.10#defineSlaveAddressVDD0x49 Lux=CalculateLux(GainSetHigh4, IntegScal1000, LightIntensity0, LightIntensit

33、y1, T);程序错误代码全乱了，就是不对，考试不会 2.3-通用同步异步收发机USART设计 115200; USART_Parity_No; PUTCHAR_PROTOTYPE Word中波特率115200，无校验，调用这个函数(没有括号)复位超级终端设置好会显示USART Printf Example: retarget the C library printf function to the USARTUSART Printf Example: hello kitty 2.3.2 9600; USART_Parity_No; PUTCHAR_PROTOTYPE Word中波特率9600

34、，无校验，调用这个函数(没有括号)复位超级终端设置好会显示USART Printf Example: retarget the C library printf function to the USARTUSART Printf Example: hello kitty 2.3.3 57600 USART_Parity_No; PUTCHAR_PROTOTYPE Word中波特率9600，无校验，调用这个函数(没有括号)复位超级终端设置好会显示USART Printf Example: retarget the C library printf function to the USARTUSA

35、RT Printf Example: hello kitty 2.3.4USART_InitStructure.USART_BaudRate = 115200; RxBufferRxCounter = (USART_ReceiveData(EVAL_COM1) & 0x7F); 是为了计数在下面函数中printf(%c,RxBufferRxCounter+);#define RxBufferSize 0xA 要求10个字符转换成十六进制为A 通信成功在电脑上输入十个键值在lcd上面显示出来2.3.5 USART_InitStructure.USART_Parity = USART_Parity

36、_Odd; 奇校验 if(RxCounter = NbrOfDataToRead) 判断用= #define RxBufferSize 0x14 输入20十个键值十六进制为14通信成功在电脑上输入20个键值在lcd上面显示出来2.3.6USART_InitStructure.USART_BaudRate = 115200; printf(%c,RxBufferRxCounter+); 加一输出下一个键值#define RxBufferSize 0xf 要求十五个键值 2.3.7USART_InitStructure.USART_BaudRate = 115200; /考试要求2，添加一行，用p

37、rintf语句实现版本号显示 printf(VER:%8.0xn, version);word中vs8 EM380C_Get_ver(u32* version) 函数功能：用于获得EM380C的固件版本号，8位 ret = send_cmd(EMSP_CMD_GET_VER, 0, NULL, 0); ver前后呼应，和上面输出的一样2.3.8USART_InitStructure.USART_BaudRate = 115200;USART_InitStructure.USART_Parity =USART_Parity_No ;ret = send_cmd(EMSP_CMD_GET_VER,

38、 0, NULL, 0); main.c中有 printf(VER:%8.0xn,version);所以要使用ver2.3.9 USART_InitStructure.USART_BaudRate = 115200; ret = send_cmd(EMSP_CMD_SCAN_AP, 0, NULL, 0);发送获取AP命令printf(%s, APlist_tmp-AP_NAME); 正确输出AP的SSID 号而不是信号 2.3.10 printf(VER:%8.0xn,version); 同上 printf(%s, APlist_tmp-AP_NAME);输出获得AP的SSID号 free(

39、EM380C_APLst_now);free是c语言中的是释放空间函数，注解里有2.4-Ethernet以太网设计char const *hosts1 = WWW ;格式没有什么逗号 IP1 192 IP2 168 IP3 0IP4 120WORD 2.4.2 char const *hosts1 = “”； IP1 192 IP2 168 IP3 0IP4 100WORD2.4.3 IP1 192 IP2 168 IP3 0 IP4 90 WORD2.4.4 IP1 192 IP2 168 IP3 0 IP4 78WORD2.4.5#define MCR_LM 0x00001000 #def

40、ine MCR_DM 0x00000800 #define MCR_IPCO 0x00000400 Word文档中为1，第十二位1000，第一个是零位2.4.6#define MCR_TE 0x00000008 #define MCR_RE 0x00000004 Word文档中为1 2.4.7#define MCR_RE 0x00000004 Word文档中为1 添加ETH_STM32x.h文件我自己的 添加文档tcp_cm3.lib2.4.8路径不对，应该是 TCPnet_examplesLibrary Net_Config.c#define HTTP_AUTHPASSW 111111 在这

41、里添加密码来自word2.4.9路径不对，应该是TCPnet_examplesLibrary Net_Config.c#define HTTP_AUTHPASSW 111222” 在这里添加密码来自word2.4.10路径不对，应该是TCPnet_examplesLibrary Net_Config.c#define HTTP_AUTHPASSW 222222 在这里添加密码来自word3.1-人机交互应用case JOY_LEFT: 重要提示 px_o=px;px-=1; if(px3) px=0; 上下对调3.1.2 case JOY_UP: 重要提示 py_o=py;py-=1;if(py3) py=0; 上下对调3.1.3case JOY_UP: py_o=py;px_o=px;if(py) py=0; else py=1; case JOY_DOWN: py_o=py;px_o=px;if(py) py=0; else py=1; case JOY_LEFT: py_o=py;px_o=px;if(px) px=0; else px=1; case JOY_RIGHT: py_o=py;px_o=px;if(px) px=0; else px=1;上下为y，左右为x 3.1.4 /* Toggle LD1 */STM_EVAL_LEDToggle(LED1);把