FX3开发入门系列EZ |
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FX3开发入门系列EZ
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fx3是usb3.0芯片 里边有一个arm 核， 官方资料url https://www.cypress.com/documentation/software-and-drivers/ez-usb-fx3-software-development-kit
本文用的windows 下面开发 用的是 FX3_SDK_Windows_v1.3.3.exe 这个软件是集成很多软件 ，有ide 和gpif ii等软件 FX3_SDK_Windows安装之后会出现这些软件 ez usb suite 是eclipse的ide
创建一个新项目了解开发的流程 1.创建 新项目
main.c 和main.h main.h #ifndef MAIN_H_ #define MAIN_H_ #include “cyu3types.h” #define THREAD_STACK (0x0200) /* App thread stack size / #define THREAD_PRIORITY (8) / App thread priority */ #endif /* MAIN_H_ */ main.c /* main.cCreated on: 2020年5月25日 Author: Administrator*/ #include “cyu3system.h” #include “cyu3os.h” #include “cyu3error.h” #include “cyu3gpio.h” #include “cyu3uart.h” #include “cyu3utils.h” #include “main.h” CyU3PThread Thread1; CyU3PThread Thread2; void Thread1_Entry ( uint32_t input) { for (;;) { CyU3PThreadSleep (100); }} void Thread2_Entry ( uint32_t input) { for (;;) { CyU3PThreadSleep (100); }} /* Application define function which creates the application threads. */ void CyFxApplicationDefine ( void) {//CyFxApplicationDefine创建线程的。创建2个线程 void *ptr = NULL; uint32_t ret = CY_U3P_ERROR_MEMORY_ERROR; // Create thread1 ptr = CyU3PMemAlloc (THREAD_STACK); if (ptr != NULL) { ret = CyU3PThreadCreate ( &Thread1, /* Thread structure. */ "Thread 1", /* Thread ID and name. */ Thread1_Entry, /* Thread entry function. */ 0, /* Thread input parameter. */ ptr, /* Pointer to the allocated thread stack. */ THREAD_STACK, /* Allocated thread stack size. */ THREAD_PRIORITY, /* Thread priority. */ THREAD_PRIORITY, /* Thread pre-emption threshold: No preemption. */ CYU3P_NO_TIME_SLICE, /* No time slice. */ CYU3P_AUTO_START /* Start the thread immediately. */ ); } else { ret = CY_U3P_ERROR_MEMORY_ERROR; } if (ret != CY_U3P_SUCCESS) { goto InitFail; } // Create thread2 ptr = CyU3PMemAlloc (THREAD_STACK); if (ptr != NULL) { ret = CyU3PThreadCreate ( &Thread2, /* Thread structure. */ "Thread 2", /* Thread ID and name. */ Thread2_Entry, /* Thread entry function. */ 0, /* Thread input parameter. */ ptr, /* Pointer to the allocated thread stack. */ THREAD_STACK, /* Allocated thread stack size. */ THREAD_PRIORITY, /* Thread priority. */ THREAD_PRIORITY, /* Thread pre-emption threshold: No preemption. */ CYU3P_NO_TIME_SLICE, /* No time slice. */ CYU3P_AUTO_START /* Start the thread immediately. */ ); } else { ret = CY_U3P_ERROR_MEMORY_ERROR; } if (ret != CY_U3P_SUCCESS) { goto InitFail; } return;InitFail: /* As the initialization failed, there is nothing much we can do. Just reset the device * so that we go back to the boot-loader. */ CyU3PDeviceReset (CyFalse); } int main (void) { CyU3PIoMatrixConfig_t io_cfg; CyU3PReturnStatus_t status = CY_U3P_SUCCESS; /* Initialize the device */ //CPU时钟设置、VIC（向量中断控制器）初始化、设置PLLs（锁相环） //input clk = 19.2 M;SYS_CLK_PLL = 384M,/2.... // Start with the default clock at 384 MHz /* Initialize the device */ /* For default configuration, pass in NULL as parameter. This will set CPU divider * to 2 (~200MHz), DMA and MMIO dividers to 2 (~100MHz); and assume 32KHz standby * clock is supplied */ status = CyU3PDeviceInit (NULL); if (status != CY_U3P_SUCCESS) { goto handle_fatal_error; } /* Initialize the caches. Enable both Instruction and Data caches. */ //一般在有大数据处理的时候才会打开数据cache，如果是简单的处理打开了cache可能会降低整个系统的效率！cache size:8k. status = CyU3PDeviceCacheControl (CyTrue, CyTrue, CyTrue); if (status != CY_U3P_SUCCESS) { goto handle_fatal_error; } /* Configure the IO matrix for the device. */ CyU3PMemSet ((uint8_t *)&io_cfg, 0, sizeof(io_cfg)); io_cfg.isDQ32Bit = CyFalse; io_cfg.s0Mode = CY_U3P_SPORT_INACTIVE; io_cfg.s1Mode = CY_U3P_SPORT_INACTIVE; io_cfg.useUart = CyTrue; io_cfg.useI2C = CyFalse; io_cfg.useI2S = CyFalse; io_cfg.useSpi = CyFalse; io_cfg.lppMode = CY_U3P_IO_MATRIX_LPP_UART_ONLY; /* No GPIOs are enabled. */ io_cfg.gpioSimpleEn[0] = 0; io_cfg.gpioSimpleEn[1] = 0; io_cfg.gpioComplexEn[0] = 0; io_cfg.gpioComplexEn[1] = 0; status = CyU3PDeviceConfigureIOMatrix (&io_cfg); if (status != CY_U3P_SUCCESS) { goto handle_fatal_error; } /* This is a non returnable call for initializing the RTOS kernel */ CyU3PKernelEntry ();//执行到此会跳入: CyFxApplicationDefine(). /* Dummy return to make the compiler happy */ return 0;handle_fatal_error: /* Cannot recover from this error. */ while (1);} 之后编译 代码的学习从示例和官方文档学习 |
文档和示例代码
选 择FX3 Project 建 新项目 
新项目内的文件就一个includes 你的sdk的头文件
cyf_gcc_startup.s 从官方示例取到放项目内 cyxtx.c 也一样从官方取得
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