W7500P Slow I/O

Question

Hi, I’m doing some tests with I/O speed on W7500P and I am achieving only 2MHz on the following code: [code] DigitalOut myled(PC_8); int main() { *(volatile uint32_t *)(0x41001014) = 0x0060100; // set to 48 MHz while(1) { *(volatile uint32_t *)0x44000000 |= 0x100; // IO high *(volatile uint32_t *)0x44000000 &= 0xEFF; // IO low } } [/code] If the core clock is 48 MHz, how much is the FSB? Is there any way to speed up the I/O transition? I’m implementing a 16bit display and need faster I/O. Environment: mbed and WIZwiki-W7500P Best regards,

lawrence · Answer

hello, joaopaulob thank you for your interest in w7500p I am not sure you test with st micro or other mcu. even st micro mcu has no support over 2MHz gpio speed. I do not no what you want to do with gpio but I think any mcu could not suppert it. thank you lawrence