本文主要是介绍Summary for my 4 months，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
1. 完成了一个小的project
利用DTW和SPRING分类算法，识别用户手势，控制智能灯。
我的职责：
1.1 负责数据收集（serial port communication）及磁力数据矫正
a. 用C语言和Java写的读写串口，参见
http://blog.csdn.net/u011680118/article/details/49208771
http://blog.csdn.net/u011680118/article/details/49750099
b. 利用矩阵计算库来做磁力矫正
Java使用的库尝试过la4j, colt 最后决定改成C语言，于是使用了GSL。
http://blog.csdn.net/u011680118/article/details/49208839
1.2 负责灯的控制（hue lamp api, win socket, http）
a. 需要发现hue lamp bridge，这个通过发送SSDP协议中的特定HTTP请求到多播地址，收到回复后可以找到bridge的IP地址。
http://blog.csdn.net/u011680118/article/details/49121005
http://blog.csdn.net/u011680118/article/details/49434639
b. 通过Socket给birdge发送username获得UID，利用这个UID去进行hue lamps的控制。
参考：
http://blog.csdn.net/u011680118/article/details/49133743
http://blog.csdn.net/u011680118/article/details/49434855
c. 控制灯就是按照API文档，构建包含Json字符串的HTTP请求。
1.3 负责vibrator子系统（read datasheets online, modify programs in Contiki, flash and see PWM output by Digital Logic, use SolidWorks to design 3D box and print them）
a. 生成PWM信号
//TODO: Added by Amy, 11/12/2015
#define GPT_CONF_BASE GPT_0_BASE
#define IOC_CONF_SEL IOC_PXX_SEL_GPT0_ICP1 // act as GPTimer0 ICP1
#define PWM_GPIO_CONF_PORT GPIO_A_NUM
#define PWM_GPIO_CONF_PIN 1void enable_gptimer(){/* Enable */REG(GPT_CONF_BASE + GPTIMER_CTL) |= GPTIMER_CTL_TAEN;
}void disable_gptimer(){/* Stop the timer */REG(GPT_CONF_BASE + GPTIMER_CTL) = 0;
}#define GPTIMER_ON 1
#define GPTIMER_OFF 0
int get_gptimer_state(){if(REG(GPT_CONF_BASE + GPTIMER_CTL) == 0)return GPTIMER_OFF;elsereturn GPTIMER_ON;
}//Config PA1 as an PWM output pin
/*
periodCount: 16000 ---> 1kHz
dutyCycle: 0.25 0.5 0.75
*/
void initPWM(int periodCount, double dutyCycle) {//16Mhz //printf("init PWM start\n");/* Enable module clock for the GPTx in Active mode, GPT0 clock enable, CPU running */REG(SYS_CTRL_RCGCGPT) |= SYS_CTRL_RCGCGPT_GPT0;disable_gptimer();/* Use 16-bit timer */REG(GPT_CONF_BASE + GPTIMER_CFG) = 0x04;/* Configure PWM mode, 0x00000008 Timer A alternate mode. */REG(GPT_CONF_BASE + GPTIMER_TAMR) = 0;REG(GPT_CONF_BASE + GPTIMER_TAMR) |= GPTIMER_TAMR_TAAMS;/* To enable PWM mode, the TACM bit must be cleared and the lowest 2 bits (TAMR) field must be configured to 0x2.GPTIMER_TnMR bit values, GPTIMER_TAMR_TAMR_PERIODIC is 0x00000002 */REG(GPT_CONF_BASE + GPTIMER_TAMR) |= GPTIMER_TAMR_TAMR_PERIODIC;//how often the counter is incremented: every pre-scaler / clock 16000000 secondsREG(GPT_CONF_BASE + GPTIMER_TAPR) = 0; //PRESCALER_VALUE /* Set the start value (period), count down */REG(GPT_CONF_BASE+ GPTIMER_TAILR) = periodCount;//0xF42400; //16000: 3E80, so period is 1s. 16000000:F42400/* Set the deassert period */REG(GPT_CONF_BASE + GPTIMER_TAMATCHR) = periodCount * (1 - dutyCycle);//0x7A1200; //800: 0x1F40, so the duty rate is 50%, 8000000: 7A1200// Defined in contiki/cpu/cc2538/dev/ioc.h/* Function select for Port:Pin.The third param sel can be any of the IOC_PXX_SEL_xyz defines. For example, IOC_PXX_SEL_UART0_TXD will set the port to act as UART0 TX.Selects one of the 32 pins on the four 8-pin I/O-ports (port A, port B, port C, and port D) to be the GPT0OCP1.Configure pin : PA:1 selected as GPT0OCP1*/ioc_set_sel(PWM_GPIO_CONF_PORT, PWM_GPIO_CONF_PIN, IOC_CONF_SEL);/* Set Port:Pin override function, IOC_OVERRIDE_OE: Output */ioc_set_over(PWM_GPIO_CONF_PORT, PWM_GPIO_CONF_PIN, IOC_OVERRIDE_OE);/* Configure the pin to be under peripheral control with PIN_MASK of port with PORT_BASE.*/GPIO_PERIPHERAL_CONTROL(GPIO_PORT_TO_BASE(PWM_GPIO_CONF_PORT), GPIO_PIN_MASK(PWM_GPIO_CONF_PIN));enable_gptimer();//printf("init PWM end\n");
}
b. 使用3D printer
用SolidWorks直接看它的教程即可，然后先制作parts，做好每个部分之后可以用assembly来仿真看看效果。再将parts保存为stl文件，把stl文件交给工作人员即可打印。
1.4 中间穿插着改了数据传输频率（bluetooth, baudRate）
修改baudRate
/** Baud rate defines used in uart_init() to set the values of UART_IBRD and* UART_FBRD in order to achieve the configured baud rates.*/
#define UART_CLOCK_RATE 16000000 /* 16 MHz */
#define UART_CTL_HSE_VALUE 0
#define UART_CTL_VALUE (UART_CTL_RXE | UART_CTL_TXE | (UART_CTL_HSE_VALUE << 5))/* DIV_ROUND() divides integers while avoiding a rounding error: */
#define DIV_ROUND(num, denom) (((num) + (denom) / 2) / (denom))#define BAUD2BRD(baud) DIV_ROUND(UART_CLOCK_RATE << (UART_CTL_HSE_VALUE + 2), (baud))
#define BAUD2IBRD(baud) (BAUD2BRD(baud) >> 6)
#define BAUD2FBRD(baud) (BAUD2BRD(baud) & 0x3f)
//*********************************************************************************************************************//
// Change UART baud rate from 9600 to 115200 after we set bluetooth frequency to 115200
void set_uart_baud_rate(unsigned int uart_base) {/* Make sure the UART is disabled before trying to configure it */REG(uart_base + UART_CTL) = UART_CTL_VALUE;/* Baud Rate Generation */REG(uart_base + UART_IBRD) = BAUD2IBRD(115200);REG(uart_base + UART_FBRD) = BAUD2FBRD(115200);/* UART Control: 8N1 with FIFOs */REG(uart_base + UART_LCRH) = UART_LCRH_WLEN_8 | UART_LCRH_FEN;/* UART Enable */REG(uart_base + UART_CTL) |= UART_CTL_UARTEN;
}
2. 吃过的美食
去Amy & Jason 家里吃pizza， 还有鱼香肉丝，海带汤，大酱汤，蔬菜沙拉，煎荷包蛋。
去Larry & Helen 家里吃的Bible study晚餐，那个起司意面好棒！还有大葱汤，暖暖的好贴心。还有三明治，培根，蔬菜沙拉，pizza。都非常棒！
去恩谷教会吃的各种中餐，非常棒！花椰菜，水煮鱼，红烧肉，凉拌豆腐，麻辣烫，狮子头等等。。
去姚弟兄家里吃的红烧肉和台湾卤肉面，还有海鲜汤，冬瓜汤，荠菜饺子，简直好吃爆！！
和Wendy, Amanda一起去的Cafe Exel，三个人才点了一盘appetizer，然后吃了好多面包，还有一分甜点。
和Wendy, Chelsea一起去的RoadHouse，吃正宗的牛排，就是有点咸，其他面包和烤土豆都非常好吃！
和Wendy 一起去的 Chick fil-A 等快餐，味道也很棒，跟中国的差不多。
和金鸽姐，Amy一起去的China King Buffet，撑死了。。味道也还行。
和Jui一起去的IHOP，最爱那里的鸡蛋饼还有pancakes
这篇关于Summary for my 4 months的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
