SPI从机RX中断不触发

我有PIC24FJ256GA705，我尝试用中断来制作SPI奴隶。不幸的是，我正在努力使它工作。中断是从来没有触发的。我怀疑有一些东西我错过了设置或配置。我使用SPI3模块。为此，SPI3SS连接到PIN 12SPI3O-MOSI连接到PIN 11SPI3YMISO连接到引脚13SPI3Y-CLK连接到引脚15。这是我的配置：这是我的代码：我正在发送。SPI数据（附加屏幕截图）。我知道，从来没有调用过SPI3RX中断，因为在该函数中没有执行（“DeLyOn（））宏可以）。如何使这个SPI从机工作？我错过了什么？



      以下为原文

    I have PIC24FJ256GA705 and I'm trying to make SPI slave with interrupts.
Unfortunately I'm struggling to make it work. The interrupt is never triggered.
I suspect there is something I'm missing to set or configure.

I use SPI3 module for this.
SPI3_SS is connected to pin 12
SPI3_MOSI is connected to pin 11
SPI3_MISO is connected to pin 13
SPI3_CLK is connected to pin 15

This is my configuration:
#pragma config BWRP = OFF // Boot Segment Write-Protect bit (Boot Segment may be written)
#pragma config BSS = DISABLED // Boot Segment Code-Protect Level bits (No Protection (other than BWRP))
#pragma config BSEN = OFF // Boot Segment Control bit (No Boot Segment)
#pragma config GWRP = OFF // General Segment Write-Protect bit (General Segment may be written)
#pragma config GSS = DISABLED // General Segment Code-Protect Level bits (No Protection (other than GWRP))
#pragma config CWRP = OFF // Configuration Segment Write-Protect bit (Configuration Segment may be written)
#pragma config CSS = DISABLED // Configuration Segment Code-Protect Level bits (No Protection (other than CWRP))
#pragma config AIVTDIS = OFF // Alternate Interrupt Vector Table bit (Disabled AIVT)

// FBSLIM
#pragma config BSLIM = 0x1FFF // Boot Segment Flash Page Address Limit bits (Boot Segment Flash page address limit)

// FSIGN

// FOSCSEL
#pragma config FNOSC = FRCPLL // Oscillator Source Selection (Fast RC Oscillator with divide-by-N with PLL module (FRCPLL) )
//#pragma config FNOSC = FRC
#pragma config PLLMODE = PLL4X // PLL Mode Selection (8x PLL selected)
//#pragma config PLLMODE = PLL96DIV1
#pragma config IESO = ON // Two-speed Oscillator Start-up Enable bit (Start up device with FRC, then switch to user-selected oscillator source)

// FOSC
#pragma config POSCMD = NONE // Primary Oscillator Mode Select bits (Primary Oscillator disabled)
#pragma config OSCIOFCN = ON // OSC2 Pin Function bit (OSC2 is general purpose digital I/O pin)
#pragma config SOSCSEL = OFF // SOSC Power Selection Configuration bits (Digital (SCLKI) mode)
#pragma config PLLSS = PLL_FRC // PLL Secondary Selection Configuration bit (PLL is fed by the on-chip Fast RC (FRC) oscillator)
#pragma config IOL1WAY = ON // Peripheral pin select configuration bit (Allow only one reconfiguration)
//#pragma config FCKSM = CSECME // Clock Switching Mode bits (Both Clock switching and Fail-safe Clock Monitor are enabled)
//#pragma config FCKSM = CSECMD
#pragma config FCKSM = CSECME

// FWDT
#pragma config WDTPS = PS32768 // Watchdog Timer Postscaler bits (1:32,768)
#pragma config FWPSA = PR128 // Watchdog Timer Prescaler bit (1:128)
#pragma config FWDTEN = OFF // Watchdog Timer Enable bits (WDT and SWDTEN disabled)
#pragma config WINDIS = OFF // Watchdog Timer Window Enable bit (Watchdog Timer in Non-Window mode)
#pragma config WDTWIN = WIN25 // Watchdog Timer Window Select bits (WDT Window is 25% of WDT period)
#pragma config WDTCMX = WDTCLK // WDT MUX Source Select bits (WDT clock source is determined by the WDTCLK Configuration bits)
#pragma config WDTCLK = LPRC // WDT Clock Source Select bits (WDT uses LPRC)

// FPOR
#pragma config BOREN = ON // Brown Out Enable bit (Brown Out Enable Bit)
#pragma config LPCFG = OFF // Low power regulator control (No Retention Sleep)
#pragma config DNVPEN = ENABLE // Downside Voltage Protection Enable bit (Downside protection enabled using ZPBOR when BOR is inactive)

// FICD
#pragma config ICS = PGD1 // ICD Communication Channel Select bits (Communicate on PGEC1 and PGED1)
#pragma config JTAGEN = OFF // JTAG Enable bit (JTAG is disabled)

// FDEVOPT1
#pragma config ALTCMPI = ENABLE // Alternate Comparator Input Enable bit (C1INC, C2INC, and C3INC are on their standard pin locations)
#pragma config TMPRPIN = OFF // Tamper Pin Enable bit (TMPRN pin function is disabled)
#pragma config SOSCHP = ON // SOSC High Power Enable bit (valid only when SOSCSEL = 1 (Enable SOSC high power mode (default))
#pragma config ALTI2C1 = ALTI2CEN

This is my code:
void config() {
CLKDIVbits.RCDIV=0b001;
CLKDIVbits.PLLEN=1;
CLKDIVbits.CPDIV=0b00;

OSCCONbits.NOSC=0b001;
OSCCONbits.CLKLOCK=0;
OSCCONbits.OSWEN=1;
OSCDIVbits.DIV=0;

ANSA=0;
ANSB=0;
ANSC=0;

LED_TRIS=0;
}
void setupSPI() {
SPI3_CLK_TRIS=1;
SPI3_MOSI_TRIS=1;
SPI3_MISO_TRIS=0;
SPI3_SS_TRIS=1;

// SPI3 slave
// SPI3_MOSI = RB12 = RP12
// SPI3_SS = RB13 = RP13
// SPI3_MISO = RA10 = RP28
// SPI3_CLK = RB14 = RP14

RPINR28bits.SCK3R=14; // RP14, CLK3
RPINR28bits.SDI3R=12; // RP12, MOSI3
RPINR29bits.SS3R=13; // RP13, SS3

RPOR14bits.RP28R=23; // 23 = SDO3, MISO
RPOR6bits.RP12R=0;
RPOR6bits.RP13R=0;
RPOR7bits.RP14R=0;
SPI3CON1Lbits.SPIEN=0;

_SPI3RXIP=3;
IEC3bits.SPI3RXIE=1;
IEC5bits.SPI3IE=1;


_SPI3BUFL=0;
SPI3CON1bits.DISSDO=0;
SPI3CON1bits.DISSDI=0;
SPI3CON1bits.DISSCK=0;
SPI3CON1bits.MODE16=0;

SPI3CON1Lbits.CKP=0;
SPI3CON1Lbits.CKE=0;
SPI3CON1Lbits.MSTEN=0;
SPI3CON1Lbits.SSEN=1;
    SPI3CON1Lbits.SMP=0;

SPI3STATLbits.SPIROV=0;

SPI3CON1Lbits.SPIEN=1;

_SPI3BUFL=0;

}
int main(void) {
config();
setupSPI();
_GIE=1;

while (1) {}
}
void __attribute__ ((interrupt, no_auto_psv)) _SPI3RXInterrupt(void) {
LED_ON();
_SPI3RXIF=0;
}

I'm sending SPI data (attached screenshot).
I know that _SPI3RXInterrupt is never called, because nothing within that function is executed ("LED_ON()" macro is OK).

How to make this SPI slave work? What I am missing?

   Attached Image(s)