ADC in non-interupt mode

Question

Hi everyone I have problem with ADC->ADC_INT register dont change value 0->1 after ADC conversion end . It is a bug ? ADCnon-interrupt846×768 33.4 KB void ADC_INIT (void) { ADC->ADC_CTR = ADC_CTR_PWD_NRMOP; } uint16_t ADC_START ( const uint8_t channel) { ADC->ADC_CHSEL = channel;// select channel ADC->ADC_START = ADC_START_START; // start conversion return ADC->ADC_INT; } sprintf(UART_BUFFER,"ADC CHANNEL 0 start conversion %d ADC_INT= %d
\0",330*ADC->ADC_DATA/4096,ADC_START(0)); // start conversion function ADC_START return ADC_INT value S_UartPuts (UART_BUFFER); delay_ms(100); // wait end conversion sprintf(UART_BUFFER,"ADC CHANNEL 0 end conversion %d ADC_INT= %d
\0",330*ADC->ADC_DATA/4096,ADC->ADC_INT); S_UartPuts (UART_BUFFER); ADC CLK is 1Mhz , I start conversion and I will check ADC_INT value its correctly zero, next I wait 100ms , I think that at 1Mhz, after 100ms, the transfer will definitely end and I will check ADC_INT value, but value is permanently zero. However ADC_DATA register changes its value according to the set voltage. Thanks for help

TheoIm · Answer

I am unable to assist you precisely because I do not have access to the entire code you possess. To use the ADC, it is recommended to configure it using the structure declared in the W7500 GPIO header file, similarly to how you would set up GPIO. Additionally, to utilize interrupts, you should add your desired actions to the ADC interrupt handler. If you want to know the detailed method, please refer to the link below. W7500 interrupt example link : W7500x_StdPeriph_Lib/Projects/W7500x_StdPeriph_Examples/ADC/ADC_Interrupt at master · Wiznet/W7500x_StdPeriph_Lib · GitHub

Selectech · Answer

So seems that if you enable the ADC interrupt enable, but leave the NVIC IRQ disabled, that non-interrupt mode works ok. Tried it on my setup ( with no interrupt handler ) & is ok now. My code is written in Oberon, is working ok now.

Dumitru · Answer

So seems that if you enable the ADC interrupt enable, but leave the NVIC IRQ disabled, that non-interrupt mode works ok. Tried it on my setup ( with no interrupt handler ) & is ok now. My code is written in Oberon, is working ok now. Thanks now is really work , this is a bug in ADC One detail after conversion is necessary to clear interrupt in ADC_INTCLR I update flowchart from reference manual ADCnon-interrupt749×816 63.3 KB #define ADC_TIMEOUT 1000 void ADC_INIT (void) { ADC->ADC_CTR = ADC_CTR_PWD_NRMOP; // enable adc ADC->ADC_INT = ADC_INT_MASK_ENA; // enable interrupt } uint8_t ADC_START ( const uint8_t channel) { ADC->ADC_CHSEL = channel;// select channel ADC->ADC_INTCLR = ADC_INTCLEAR;// clear INT flag if (ADC->ADC_INT&0x01) // check that the INT flag is really clear!!! return 0xff; // return error ADC->ADC_START = ADC_START_START; // start conversion return 0; // everything is OK } uint16_t ADC_READ (uint16_t timeout) { while (!(ADC->ADC_INT&0x01));// wait to end conversion { if(timeout == 0) return 0xffff; // return error else timeout--; __NOP(); } return ADC->ADC_DATA; } Now the code works correctly ADC_START(ADC_CHSEL_CH0);// select channel and star conversion sprintf(UART_BUFFER,"ADC CHANNEL 0 start conversion ADC_INT= %d
\0",ADC->ADC_INT&0x01); // start conversion function ADC_START return ADC_INT value S_UartPuts (UART_BUFFER); ADC_DATA = ADC_READ(ADC_TIMEOUT); // wait end conversion and read data sprintf(UART_BUFFER,"ADC CHANNEL 0 end conversion data= %d ADC_INT= %d
\0",ADC_DATA,ADC->ADC_INT&0x01); S_UartPuts (UART_BUFFER); And I would like to ask you to delete the I2C data on your site https://www.wiznet.io/product-item/w7500p/ if not supported HW I2C image1372×2744 154 KB Because all your distributors are writing this wrong information For example : https://eu.mouser.com/ProductDetail/WIZnet/W7500P?qs=49jCJYXrXPhG03qIHZCeEQ%3D%3D or https://www.tme.eu/en/details/w7500p/microcontrollers-others/wiznet/ Next question is what is accuracy LDO on…