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Board index » 產品技術問題 (開版時請註明使用的元件編號及C編譯器版本) » » 32-bit PIC® MCU » pic32mk的HLVD功能


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a16450
Re: pic32mk的HLVD功能
#3
初級會員
初級會員


查看用戶資訊
感謝KevinLu的回覆, 以下是我的步驟

我先在我的初始化那邊加入以下程式
#ifndef __MPLAB_DEBUGGER_SIMULATOR
    while ((HLVDCON & _HLVDCON_BGVST_MASK) != (_HLVDCON_BGVST_MASK))
        ;
#endif
    HLVDCONCLR = _HLVDCON_VDIR_MASK;                   // Event occurs when voltage equals or falls below trip point
    HLVDCONSET = (0b0110) << _HLVDCON_HLVDL_POSITION;  // 3.0V
    HLVDCONCLR = _HLVDCON_SIDL_MASK;
    HLVDCONSET = _HLVDCON_ON_MASK;


然後在interrupt.c那邊加入
void __attribute__((nomips16)) _nmi_handler(void) {
    uint32_t getRNMICON = RNMICON;
    SYSKEY              = 0x00000000;
    SYSKEY              = 0xAA996655;
    SYSKEY              = 0x556699AA;

  ...

    if ((getRNMICON & _RNMICON_HLVD_MASK) == _RNMICON_HLVD_MASK) {
        // Programmable High/Low-Voltage Detect
        EEPROM_WordWrite(0x700, 0x87);
        char          timestamp[16];
        uart_buffer_t uartMessage = {};
        formatString_Timestamp(timestamp);
        sprintf(uartMessage.data,                      //
                "rn%sRNMICON = 0x%08X;(%s:%d)rn",  //
                timestamp,                             //
                RNMICON,                               //
                __FILE__,                              //
                __LINE__);
        uartMessage.len = strlen(uartMessage.data);
        UART_PushTxQueue(UART_6, &uartMessage);
        RNMICONCLR = _RNMICON_HLVD_MASK;
    }

    ...

    SYSKEY = 0x33333333;
    asm volatile("eret");  // return from interrupt
}


我在我的按鈕那邊強制觸發HLVD
void Debounce_Tasks(void) {
    static bool flagChecked[DEBOUNCE_PIN_MAX];
    bool        flagDebugMessage = false;
    getInputPin();

    for (size_t pinIndex = 0; pinIndex < DEBOUNCE_PIN_MAX; pinIndex++) {
        if (object[pinIndex].pinSetting.pullState == PULL_STATE_NONE) {
            // 設置浮接的輸入腳不偵測
            if (flagChecked[pinIndex] == false) {
                flagChecked[pinIndex] = true;
                flagDebugMessage      = true;
            }
            Nop();
        } else {
            if (object[pinIndex].pinSetting.input == object[pinIndex].pinTriggerCondition) {
                if (object[pinIndex].pinState != PIN_STATE_PRESSED) {
                    if ((object[pinIndex].timer[DEBOUNCE_TIMER_PRESS] + 1 >= BOUNCE_TIME)) {
                        object[pinIndex].pinState = PIN_STATE_PRESSED;
                        if (pinIndex == DEBOUNCE_PIN_SWITCH_2) {
#ifndef __MPLAB_DEBUGGER_SIMULATOR
                            ramStart[0] = BTL_TRIGGER_PATTERN;
                            ramStart[1] = BTL_TRIGGER_PATTERN;
                            ramStart[2] = BTL_TRIGGER_PATTERN;
                            ramStart[3] = BTL_TRIGGER_PATTERN;
                            while (UART5_WriteIsBusy())
                                ;
                            formatString_Timestamp(timestamp);
                            sprintf(uartMessage.data,                    //
                                    "rn%sEntering Bootloader...rn",  //
                                    timestamp                            //
                            );
                            uartMessage.len = strlen(uartMessage.data);
                            UART5_Write(uartMessage.data, uartMessage.len);
                            while (UART5_TransmitComplete() != true)
                                ;
                            SYS_RESET_SoftwareReset();
#endif
                        }
                        if (pinIndex == DEBOUNCE_PIN_SWITCH_3) {
#ifndef __MPLAB_DEBUGGER_SIMULATOR
                            formatString_Timestamp(timestamp);
                            sprintf(uartMessage.data,                              //
                                    "rn%sRNMICONSET = _RNMICON_HLVD_MASK;rn",  //
                                    timestamp                                      //
                            );
                            uartMessage.len = strlen(uartMessage.data);
                            UART_PushTxQueue(UART_6, &uartMessage);

                            SYSKEY     = 0x00000000;
                            SYSKEY     = 0xAA996655;
                            SYSKEY     = 0x556699AA;
                            RNMICONSET = _RNMICON_HLVD_MASK;
                            SYSKEY     = 0x33333333;
                            formatString_Timestamp(timestamp);
                            sprintf(uartMessage.data,                      //
                                    "rn%sRNMICON = 0x%08X;(%s:%d)rn",  //
                                    timestamp,                             //
                                    RNMICON,                               //
                                    __FILE__,                              //
                                    __LINE__);
                            uartMessage.len = strlen(uartMessage.data);
                            UART_PushTxQueue(UART_6, &uartMessage);
#endif
                        }

                        flagDebugMessage = true;
                    } else {
                        object[pinIndex].timer[DEBOUNCE_TIMER_PRESS]++;
                    }
                }
                object[pinIndex].timer[DEBOUNCE_TIMER_RELEASE] = 0;
            } else {
                if (object[pinIndex].pinState != PIN_STATE_RELEASED) {
                    if (object[pinIndex].timer[DEBOUNCE_TIMER_RELEASE] + 1 >= BOUNCE_TIME) {
                        object[pinIndex].pinState = PIN_STATE_RELEASED;
                        flagDebugMessage          = true;
                    } else {
                        object[pinIndex].timer[DEBOUNCE_TIMER_RELEASE]++;
                    }
                }
                object[pinIndex].timer[DEBOUNCE_TIMER_PRESS] = 0;
            }
        }
        if (flagDebugMessage) {
            flagDebugMessage = false;
            formatString_Debounce(object[pinIndex].pinState, pinIndex);
        }
    }
}


我進Debug看, 我始終沒有進入過NMI, 然後我就在while加入polling RNMICON
if ((RNMICON & _RNMICON_HLVD_MASK) == _RNMICON_HLVD_MASK) {
            // Programmable High/Low-Voltage Detect
            SYSKEY = 0x00000000;
            SYSKEY = 0xAA996655;
            SYSKEY = 0x556699AA;
            formatString_Timestamp(timestamp);
            sprintf(uartMessage.data,                      //
                    "rn%sRNMICON = 0x%08X;(%s:%d)rn",  //
                    timestamp,                             //
                    RNMICON,                               //
                    __FILE__,                              //
                    __LINE__);
            uartMessage.len = strlen(uartMessage.data);
            UART_PushTxQueue(UART_6, &uartMessage);

            RNMICONCLR = _RNMICON_HLVD_MASK;
            SYSKEY     = 0x33333333;
        }


這樣我可以強制舉旗RNMICON->HLVD, 但無法舉旗HLVDCON->HLEVT, 我猜是HLVD沒有被開啟, 但也沒有PMD使它開啟

以上是我測試的方法, 但我都沒有辦法觸發HLVD與進入NMI.

發表於: 2022/11/4 16:45
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KevinLu
Re: pic32mk的HLVD功能
#2
管理員
管理員


查看用戶資訊
a16450 你好，PIC32MK的 HLVD Event 中斷旗標在 RNMICON 暫存器的 HLVD bit，如下圖:
縮圖


HLVD 可以有多種觸發狀態，建議在程式中加入修改所有需要的設定值，並確認每個設定值符合實際觸發需求，如下圖:
縮圖

縮圖

縮圖


最後在程式中根據 HLVD 手冊上的步驟設定和執行，需注意部分暫存器名稱和功能與手冊上有些不同，如下圖:
縮圖

Attach file:


jpg  RNMICON.jpg (316.80 KB)
123092_6362236032e54.jpg 754X1006 px

jpg  BLOCK.jpg (53.89 KB)
123092_6362237185779.jpg 757X620 px

jpg  HLVD-1.jpg (208.00 KB)
123092_636223b521e7f.jpg 749X900 px

jpg  HLVD-2.jpg (91.69 KB)
123092_636223cc33c03.jpg 747X454 px

jpg  HLVD.jpg (269.59 KB)
123092_636223e1cdf17.jpg 811X760 px

發表於: 2022/11/2 15:59
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a16450
pic32mk的HLVD功能
#1
初級會員
初級會員


查看用戶資訊
使用的晶片是pic32mk_mcm系列, 根據datasheet中32.0 HIGH/LOW-VOLTAGE DETECT(HLVD)有提到參考"DS60001408"這份文件.
在Section 38. High/Low-Voltage Detect (HLVD)[DS60001408]中的38.3.1 HLVD Setup(page. 6)所提到的步驟,
"5. Clear the HLVD Interrupt Flag in the Interrupt Controller, which may have been set from a
previous interrupt. Refer to the “Interrupts” chapter in the specific device data sheet for
HLVD interrupt-related information."

我翻片datasheet找不到相關的中斷旗標、設置方式, 甚至手動設置RNMICONSET = _RNMICON_HLVD_MASK
也無法進入NMI、讓HLEVT舉旗.

請問是否有先進使用過HLVD, 可以指導、交流 謝謝

發表於: 2022/11/1 13:11
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Board index » 產品技術問題 (開版時請註明使用的元件編號及C編譯器版本) » » 32-bit PIC® MCU » pic32mk的HLVD功能


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