W5500 wizchip_getinterrupt() return 0xfff0

Question

Hello to all I enabled socket 2 interrupt, but in ISR the wizchip_getinterrupt () function returns 0xfff0. I have enabled the interrupt using the following commands: setIR(0xf0); //clear IR register setSIR(0xff); //clear SIR register setIMR(0); //Disable all INTERRUPTS setSIMR(0); //Disable all socket INTERRUPTS wizchip_setinterruptmask(IK_SOCK_2 ); // enable socket 2 interrupt setSn_IMR(CLIENT_SOCKET,Sn_IR_CON); // enable socket 2 Sn_IR_CON interrupt and my ISR is : uint16_t int_src ; uint8_t sn_int_src = 0; void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) { if(HAL_GPIO_ReadPin(WIZ_INT_GPIO_Port , WIZ_INT_Pin) == GPIO_PIN_RESET){ int_src = wizchip_getinterrupt(); if(int_src == IK_SOCK_2){ sn_int_src = getSn_IR(CLIENT_SOCKET) & Sn_IR_CON; if(sn_int_src == Sn_IR_CON ){ setSn_IR(CLIENT_SOCKET, Sn_IR_CON); } wizchip_clrinterrupt(IK_SOCK_2); } setIR(0xf0); setSIR(0xff); } } But the variable int_src most of the time has the value 0xfff0. Sometimes it’s 0x0400 and it works fine, but most of the time it’s 0xfff0 which is wrong.

irina · Answer

mrnxp: int_src = wizchip_getinterrupt(); if(int_src == IK_SOCK_2){ sn_int_src = getSn_IR(CLIENT_SOCKET) & Sn_IR_CON; if(sn_int_src == Sn_IR_CON ){ setSn_IR(CLIENT_SOCKET, Sn_IR_CON); } wizchip_clrinterrupt(IK_SOCK_2); } setIR(0xf0); setSIR(0xff); As far as I know, code that you use can’t use in EXTI callback function. Only GPIO control operations or flags are allowed inside the EXTI callback function. Please check again by changing the code.