USB and UART interrupt together

[milton]

Posted on January 20, 2009 at 11:07

USB and UART interrupt together

[milton]

Posted on May 17, 2011 at 09:57

Hi,

I am trying to setup a system where I use interrupts for the USB communication and UART but I have a problem, I can't use both at the same time ... Both work properly separated, once I try to use both it doesn't work anymore. I think it has to deal with the interrupt priority, because I still have the USB interrupt working once it has a higher priority (0) then the UART (2).

Someone has an idea? Thanks.

This is the initialization of both of them:

UART:

...

SCU_APBPeriphClockConfig(__UART0, ENABLE);

SCU_APBPeriphReset(__UART0,DISABLE);

SetCNTR(0);

SetISTR(0);

SCU_AHBPeriphClockConfig(__USB48M,ENABLE);

// UART Module //

UART_InitStructure.UART_WordLength = UART_WordLength_8D;

UART_InitStructure.UART_StopBits = UART_StopBits_1;

UART_InitStructure.UART_Parity = UART_Parity_No ;

UART_InitStructure.UART_BaudRate = 115200;

UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None;

UART_InitStructure.UART_Mode = UART_Mode_Tx_Rx;

UART_InitStructure.UART_FIFO = UART_FIFO_Disable;

UART_DeInit(UART0);

UART_Init(UART0, &UART_InitStructure);

UART_ITConfig(UART0, UART_IT_Receive, ENABLE);

VIC_Config(UART0_ITLine, VIC_IRQ, 2);

VIC_ITCmd(UART0_ITLine, ENABLE);

/* Enable the UART0: start sending the transmit FIFO content to the hyperterminal */

UART_Cmd(UART0, ENABLE);

UART_ITConfig(UART0, UART_IT_Receive, ENABLE);

UART_LoopBackConfig(UART0, DISABLE);

USB:

SCU_USBCLKConfig(SCU_USBCLK_EXT);

// Enable USB clock //

SCU_AHBPeriphClockConfig(__USB, ENABLE);

SCU_AHBPeriphReset(__USB, DISABLE);

// USB Initialization

/* Enable and configure the priority of the USB_LP IRQ Channel*/

VIC_DeInit();

VIC_Config(USBLP_ITLine, VIC_IRQ, 0);

VIC_ITCmd(USBLP_ITLine, ENABLE);

/* USB initialization */

wInterrupt_Mask = IMR_MSK;

SetCNTR(0x0003);

Token_Event = 0; /* Flags of each endpoint interrupt */

pInformation = &Device_Info;

pInformation->ControlState = 2;

pProperty = &Device_Property;

/* Initialize devices one by one */

pProperty->Init();

[benarjee]

Posted on January 05, 2016 at 07:15

hi,

im using the str912faw47 part number.iwant to use internal usb. can u pls send me the usb firmware library.

Thanks & Regards,

benarjee pasam.

09951438009

astra microwave products ltd.

[Tesla DeLorean]

Posted on January 31, 2016 at 19:24

Seriously doubt anyone is going to call you. If you want phone support you'd need to call an ST sales office.

The STR9 is a rather dated product at this point, and not at all supported here on the forum

http://www.st.com/web/en/catalog/tools/PF258060