Posted on May 17, 2011 at 09:50Thanks Jilisegiar for your help.
I thought the USB demo code of Virtual COMM Port from STR7/STR9 USB developer kit software was developed based on the IAR STR912 EVAL board. However, it is not. See the Hardware configuration below. GPIO P0.1 is the USB connection signal, but P7.0 in the IAR STR912 EVAL board.
I am using Keil UVersion3 and MTB STR9 EVAL board and would like to move the demo source code of Virtual COMM Port to the uVersion 3.
The issue is that the demo USB code configures UART0_CTS P2.0 and UART0_RTS P3.3. The MTB STR9 board does not support the UART0_CTS and UART0_RTS. What I can do can fix this issue.
I really appciate any help from you.
/*******************************************************************************
* Function Name : Set_System.
* Description : Configures Main system clocks & power
* Input : None.
* Return : None.
*******************************************************************************/
void Set_System(void)
{
SCU_MCLKSourceConfig(SCU_MCLK_OSC);
FMI_Config(FMI_READ_WAIT_STATE_2,FMI_WRITE_WAIT_STATE_0, FMI_PWD_ENABLE,
FMI_LVD_ENABLE,FMI_FREQ_HIGH);
SCU_PLLFactorsConfig(192,25,2);
SCU_PLLCmd(ENABLE);
SCU_MCLKSourceConfig(SCU_MCLK_PLL);
SCU_AHBPeriphClockConfig(__VIC,ENABLE);
SCU_AHBPeriphReset(__VIC,DISABLE);
/*USB clock = MCLK= 48MHz*/
SCU_USBCLKConfig(SCU_USBCLK_MCLK2);
/*Enable USB clock*/
SCU_AHBPeriphClockConfig(__USB,ENABLE);
SCU_AHBPeriphReset(__USB,DISABLE);
SCU_AHBPeriphClockConfig(__USB48M,ENABLE);
/* Enable the UART0 Clock */
SCU_APBPeriphClockConfig(__UART0, ENABLE);
SCU_AHBPeriphReset(__UART0,DISABLE);
/* Enable the GPIO2 Clock */
SCU_APBPeriphClockConfig(__GPIO2, ENABLE);
SCU_AHBPeriphReset(__GPIO2,DISABLE);
/* Enable the GPIO3 Clock */
SCU_APBPeriphClockConfig(__GPIO3, ENABLE);
SCU_AHBPeriphReset(__GPIO3,DISABLE);
/* Enable the GPIO5 Clock */
SCU_APBPeriphClockConfig(__GPIO5, ENABLE);
SCU_AHBPeriphReset(__GPIO5,DISABLE);
/*Configure GPIO0 (D+ Pull-Up on P0.1)*/
SCU_APBPeriphClockConfig(__GPIO0 ,ENABLE);
SCU_APBPeriphReset(__GPIO0,DISABLE);
GPIO_DeInit(GPIO0);
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected=GPIO_IPConnected_Enable;
GPIO_InitStructure.GPIO_Alternate=GPIO_OutputAlt1;
GPIO_Init (GPIO0, &GPIO_InitStructure);
/*Configure UART0_CTS P2.0*/
GPIO_DeInit(GPIO2);
/*After DeInit function P2.0 = UART0_CTS (defaut configuration)*/
GPIO_DeInit(GPIO5);
/*Gonfigure UART0_Rx pin GPIO5.1*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinInput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable;
GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1 ;
GPIO_Init (GPIO5, &GPIO_InitStructure);
GPIO_DeInit(GPIO3);
/*Gonfigure UART0_Tx pin GPIO3.4*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinInput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt3 ;
GPIO_Init (GPIO3, &GPIO_InitStructure);
/*Gonfigure UART0_RTS pin GPIO3.3*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable;
GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt3 ;
GPIO_Init (GPIO3, &GPIO_InitStructure);
UART_DeInit(UART0);
/* Enable the UART Receive interrupt: this interrupt is generated when the UART0
receive FIFO hold two data */
UART_ITConfig(UART0, UART_IT_Receive, ENABLE);
VIC_DeInit();
VIC_Config(UART0_ITLine, VIC_IRQ, 2);
VIC_ITCmd(UART0_ITLine, ENABLE);
}
