韌體更新設計實例 (一) 流程設計

目錄

安安

最近使用TI C2000系列為控制器時，為了講求執行時的效率，除了有限的精簡source code之外，還要再擠出更多速度，可以從Compiler 或Linker下手。{alertSuccess}

這份文件就講述TI的編譯器有哪些選項可以最佳化你的程式碼，當然TI的Toolchain也是從GNU Toolchain修改而來，因此大致看完文件也可以理解Source Code在編譯的時候有哪些參數可以調整，滿有趣的。

編譯器最佳化指南

在TI官方提供的的文件中，有一份Compiler Optimize Guide的文件，說明如何使用

這份文件說明編譯器最佳化的重要性不只在編譯器最佳化，更要針對編譯器最佳化進行編譯器最佳化{alertSuccess}

這份文件就講述TI的編譯器有哪些選項可以最佳化你的程式碼，當然TI的Toolchain也是從GNU Toolchain修改而來，因此大致看完文件也可以理解Source Code在編譯的時候有哪些參數可以調整，滿有趣的。

{getButton} $text={下載設計圖檔} $icon={download} $color={0xe1ba31}

原始碼範例

用Template內建的code block功能看起來像這樣

PMBUS_STACK_FILENUM(1) #define PMBUS_STACK_TARGET_ADDRESS 0U #define PMBUS_STACK_TARGET_MASK 0x7FU //***************************************************************************** // // PMBusStack_initModule // //***************************************************************************** bool PMBusStack_initModule(PMBus_StackHandle handle, const uint32_t moduleBase, uint16_t *buffer) { // // Locals // bool status = false; // // Set the module base address // PMBusStackObject_setModuleBase(handle, moduleBase); // // Assign the buffer pointer to the object, set the current pointer to // the head of the buffer // PMBusStackObject_setBufferPointer(handle, buffer); PMBusStackObject_setCurrentPositionPointer(handle, buffer); // // Reset the PMBUS Module // PMBus_disableModule(PMBusStackObject_getModuleBase(handle)); // // Take the PMBUS out of reset // PMBus_enableModule(PMBusStackObject_getModuleBase(handle)); // // Initialize depending upon whether in target or controller mode // if(PMBusStackObject_getMode(handle) == PMBUS_STACK_MODE_TARGET) { // // Initialize the target module // PMBus_initTargetMode(PMBusStackObject_getModuleBase(handle), PMBusStackObject_getTargetAddress(handle), PMBusStackObject_getTargetAddressMask(handle)); // // Configure the target module (writes to the PMBSC register) // PMBus_configTarget(PMBUSA_BASE, (PMBUS_TARGET_ENABLE_PEC_PROCESSING | PMBUS_TARGET_AUTO_ACK_4_BYTES)); // // Enable interrupts // //I2C - AAS, FIFO Interrupts RX & TX , STOP PMBus_enableInterrupt(PMBusStackObject_getModuleBase(handle), (PMBUS_INT_DATA_READY | PMBUS_INT_DATA_REQUEST | PMBUS_INT_EOM)); // // Reset the state machine // PMBusStackObject_setCurrentState(handle, PMBUS_STACK_STATE_IDLE); PMBusStackObject_setNextState(handle, PMBUS_STACK_STATE_IDLE); status = true; } else // (PMBusStackObject_getMode(handle) == PMBUS_STACK_MODE_CONTROLLER) { // // Zero out the target address and set the mask to 0x7F // (the mask is N/A in controller mode) // PMBusStackObject_setTargetAddress(handle, PMBUS_STACK_TARGET_ADDRESS); PMBusStackObject_setTargetAddressMask(handle, PMBUS_STACK_TARGET_MASK); // // Initialize the controller module // PMBus_initControllerMode(PMBusStackObject_getModuleBase(handle)); // // Enable interrupts // PMBus_enableInterrupt(PMBusStackObject_getModuleBase(handle), (PMBUS_INT_DATA_READY | PMBUS_INT_DATA_REQUEST | PMBUS_INT_EOM | PMBUS_INT_ALERT)); // // Reset the state machine // PMBusStackObject_setCurrentState(handle, PMBUS_STACK_STATE_IDLE); PMBusStackObject_setNextState(handle, PMBUS_STACK_STATE_IDLE); status = true; } return(status); }{codeBox}

用CHATGPT建議的方式看起來像這樣

  PMBUS_STACK_FILENUM(1)

#define PMBUS_STACK_TARGET_ADDRESS  0U
#define PMBUS_STACK_TARGET_MASK     0x7FU


//*****************************************************************************
//
// PMBusStack_initModule
//
//*****************************************************************************
bool PMBusStack_initModule(PMBus_StackHandle handle, const uint32_t moduleBase,
                           uint16_t *buffer)
{
    //
    // Locals
    //
    bool status = false;

    //
    // Set the module base address
    //
    PMBusStackObject_setModuleBase(handle, moduleBase);

    //
    // Assign the buffer pointer to the object, set the current pointer to
    // the head of the buffer
    //
    PMBusStackObject_setBufferPointer(handle, buffer);
    PMBusStackObject_setCurrentPositionPointer(handle, buffer);

    //
    // Reset the PMBUS Module
    //
    PMBus_disableModule(PMBusStackObject_getModuleBase(handle));

    //
    // Take the PMBUS out of reset
    //
    PMBus_enableModule(PMBusStackObject_getModuleBase(handle));

    //
    // Initialize depending upon whether in target or controller mode
    //
    if(PMBusStackObject_getMode(handle) == PMBUS_STACK_MODE_TARGET)
    {
        //
        // Initialize the target module
        //
        PMBus_initTargetMode(PMBusStackObject_getModuleBase(handle),
                            PMBusStackObject_getTargetAddress(handle),
                            PMBusStackObject_getTargetAddressMask(handle));

        //
        // Configure the target module (writes to the PMBSC register)
        //
        PMBus_configTarget(PMBUSA_BASE, (PMBUS_TARGET_ENABLE_PEC_PROCESSING |
                                        PMBUS_TARGET_AUTO_ACK_4_BYTES));

        //
        // Enable interrupts
        //
        //I2C - AAS, FIFO Interrupts RX & TX , STOP
        PMBus_enableInterrupt(PMBusStackObject_getModuleBase(handle),
                              (PMBUS_INT_DATA_READY | PMBUS_INT_DATA_REQUEST |
                               PMBUS_INT_EOM));

        //
        // Reset the state machine
        //
        PMBusStackObject_setCurrentState(handle, PMBUS_STACK_STATE_IDLE);
        PMBusStackObject_setNextState(handle, PMBUS_STACK_STATE_IDLE);

        status = true;
    }
    else // (PMBusStackObject_getMode(handle) == PMBUS_STACK_MODE_CONTROLLER)
    {
        //
        // Zero out the target address and set the mask to 0x7F
        // (the mask is N/A in controller mode)
        //
        PMBusStackObject_setTargetAddress(handle, PMBUS_STACK_TARGET_ADDRESS);
        PMBusStackObject_setTargetAddressMask(handle, PMBUS_STACK_TARGET_MASK);

        //
        // Initialize the controller module
        //
        PMBus_initControllerMode(PMBusStackObject_getModuleBase(handle));

        //
        // Enable interrupts
        //
        PMBus_enableInterrupt(PMBusStackObject_getModuleBase(handle),
                              (PMBUS_INT_DATA_READY | PMBUS_INT_DATA_REQUEST |
                               PMBUS_INT_EOM | PMBUS_INT_ALERT));

        //
        // Reset the state machine
        //
        PMBusStackObject_setCurrentState(handle, PMBUS_STACK_STATE_IDLE);
        PMBusStackObject_setNextState(handle, PMBUS_STACK_STATE_IDLE);

        status = true;
    }

    return(status);
}