I am trying to implement USB host in LPC1768 and have written a code which initiliazes a mass storage device and creates a file in the same.Unfortunately,the code doesn't works and am not able to decode the issues with it.
#include <stdio.h> #include "lpc17xx.h" #include "rl_fs.h" #include "cmsis_os.h" #include "rl_usb.h" #include "USBH_MSC.h" int main (void) { usbStatus usb_status; int32_t msc_status; FILE *f; uint8_t con = 0U; usb_status = USBH_Initialize (0U); // Initialize USB Host 0 if (usb_status != usbOK) { for (;;) { LPC_GPIO2->FIOPIN=0XFFFFFFFF; } } for (;;) { msc_status = USBH_MSC_DriveGetMediaStatus ("U0:"); LPC_GPIO2->FIOPIN=0XFFFFFFFF; if (msc_status == USBH_MSC_OK) { if (con == 0U) { con = 1U; msc_status = USBH_MSC_DriveMount ("U0:"); if (msc_status != USBH_MSC_OK) { continue; } f = fopen ("Test.txt", "w"); if (f == NULL) { continue; } fprintf (f, "USB Host Mass Storage!\n"); fclose (f); msc_status = USBH_MSC_DriveUnmount ("U0:"); if (msc_status != USBH_MSC_OK) { continue; } } } else { if (con == 1U) { con = 0U; } osDelay(100U); } }
"Unfortunately,the code doesn't works [...]"
Unfortunately, your error description is like a car owner that hands over the keys to their car with the only comment "it doesn't work". How easy do you think it would be for a repair shop if they don't get any description of what "it doesn't work" actually means? Engine doesn't start? Or vibrations over 100km/h? Or the seat heater stays cold?
It is _your_ task to collect evidence what is happening/not happening. You have the code. You have the hardware. How come your post does not contain the information?
Thanks much for the reply and apologies for the bad description :) It is not able to initialize the Usb stick connected with controller.I have written the code to make Port2 pins HIGH after initialiazing the device. I have checked the configuration of USB host middleware properly but still the pins are not getting HIGH. What else you need to know?
Try the USB Host MSC example from Pack Installer
Did you figure how to run this example?