/**
* @brief VCP_Ctrl
* Manage the CDC class requests
* @param Cmd: Command code
* @param Buf: Buffer containing command data (request parameters)
* @param Len: Number of data to be sent (in bytes)
* @retval Result of the operation (USBD_OK in all cases)
*/
static uint16_t VCP_Ctrl (uint32_t Cmd, uint8_t* Buf, uint32_t Len)
{
switch (Cmd)
{
case SEND_ENCAPSULATED_COMMAND:
/* Not needed for this driver */
break;
case GET_ENCAPSULATED_RESPONSE:
/* Not needed for this driver */
break;
case SET_COMM_FEATURE:
/* Not needed for this driver */
break;
case GET_COMM_FEATURE:
/* Not needed for this driver */
break;
case CLEAR_COMM_FEATURE:
/* Not needed for this driver */
break;
case SET_LINE_CODING:
linecoding.bitrate = (uint32_t)(Buf[0] | (Buf[1] << 8) | (Buf[2] << 16) | (Buf[3] << 24));
linecoding.format = Buf[4];
linecoding.paritytype = Buf[5];
linecoding.datatype = Buf[6];
/* Set the new configuration */
VCP_COMConfig(OTHER_CONFIG);
break;
case GET_LINE_CODING:
Buf[0] = (uint8_t)(linecoding.bitrate);
Buf[1] = (uint8_t)(linecoding.bitrate >> 8);
Buf[2] = (uint8_t)(linecoding.bitrate >> 16);
Buf[3] = (uint8_t)(linecoding.bitrate >> 24);
Buf[4] = linecoding.format;
Buf[5] = linecoding.paritytype;
Buf[6] = linecoding.datatype;
break;
case SET_CONTROL_LINE_STATE:
/* Not needed for this driver */
break;
case SEND_BREAK:
/* Not needed for this driver */
break;
default:
break;
}
return USBD_OK;
}
/**
* @brief VCP_COMConfig
* Configure the COM Port with default values or values received from host.
* @param Conf: can be DEFAULT_CONFIG to set the default configuration or OTHER_CONFIG
* to set a configuration received from the host.
* @retval None.
*/
static uint16_t VCP_COMConfig(uint8_t Conf)
{
#if 0
if (Conf == DEFAULT_CONFIG)
{
/* EVAL_COM1 default configuration */
/* EVAL_COM1 configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- Parity Odd
- Hardware flow control disabled
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_Odd;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/* Configure and enable the USART */
STM_EVAL_COMInit(COM1, &USART_InitStructure);
/* Enable the USART Receive interrupt */
USART_ITConfig(EVAL_COM1, USART_IT_RXNE, ENABLE);
}
else
{
/* set the Stop bit*/
switch (linecoding.format)
{
case 0:
USART_InitStructure.USART_StopBits = USART_StopBits_1;
break;
case 1:
USART_InitStructure.USART_StopBits = USART_StopBits_1_5;
break;
case 2:
USART_InitStructure.USART_StopBits = USART_StopBits_2;
break;
default :
VCP_COMConfig(DEFAULT_CONFIG);
return (USBD_FAIL);
}
/* set the parity bit*/
switch (linecoding.paritytype)
{
case 0:
USART_InitStructure.USART_Parity = USART_Parity_No;
break;
case 1:
USART_InitStructure.USART_Parity = USART_Parity_Even;
break;
case 2:
USART_InitStructure.USART_Parity = USART_Parity_Odd;
break;
default :
VCP_COMConfig(DEFAULT_CONFIG);
return (USBD_FAIL);
}
/*set the data type : only 8bits and 9bits is supported */
switch (linecoding.datatype)
{
case 0x07:
/* With this configuration a parity (Even or Odd) should be set */
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
break;
case 0x08:
if (USART_InitStructure.USART_Parity == USART_Parity_No)
{
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
}
else
{
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
}
break;
default :
VCP_COMConfig(DEFAULT_CONFIG);
return (USBD_FAIL);
}
USART_InitStructure.USART_BaudRate = linecoding.bitrate;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/* Configure and enable the USART */
STM_EVAL_COMInit(COM1, &USART_InitStructure);
}
#endif
return USBD_OK;
}
/**
* @brief VCP_COMConfig
* Configure the COM Port with default values or values received from host.
* @param Conf: can be DEFAULT_CONFIG to set the default configuration or OTHER_CONFIG
* to set a configuration received from the host.
* @retval None.
*/
uint16_t VCP_COMConfig(uint8_t Conf, LINE_CODING linecoding)
{
if (Conf == DEFAULT_CONFIG)
{
/*
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- Parity Odd
- Hardware flow control disabled
- Receive and transmit enabled
*/
MX_USART3_UART_Init();
/* Enable the USART Receive interrupt */
//USART_ITConfig(EVAL_COM1, USART_IT_RXNE, ENABLE);
}
else
{
/* set the Stop bit*/
switch (linecoding.format)
{
case 0:
huart3.Init.StopBits = UART_STOPBITS_1;
break;
case 1:
huart3.Init.StopBits = UART_STOPBITS_1;
break;
case 2:
huart3.Init.StopBits = UART_STOPBITS_2;
break;
default :
VCP_COMConfig(DEFAULT_CONFIG,linecoding_def);
return (USBD_FAIL);
}
/* set the parity bit*/
switch (linecoding.paritytype)
{
case 0:
huart3.Init.Parity = UART_PARITY_NONE;
break;
case 1:
huart3.Init.Parity = UART_PARITY_EVEN;
break;
case 2:
huart3.Init.Parity = UART_PARITY_ODD;
break;
default :
VCP_COMConfig(DEFAULT_CONFIG,linecoding_def);
return (USBD_FAIL);
}
/*set the data type : only 8bits and 9bits is supported */
switch (linecoding.datatype)
{
case 0x07:
/* With this configuration a parity (Even or Odd) should be set */
huart3.Init.WordLength = UART_WORDLENGTH_8B;
break;
case 0x08:
if (huart3.Init.Parity == UART_PARITY_NONE)
{
huart3.Init.WordLength = UART_WORDLENGTH_8B;
}
else
{
huart3.Init.WordLength = UART_WORDLENGTH_9B;
}
break;
default :
VCP_COMConfig(DEFAULT_CONFIG,linecoding_def);
return (USBD_FAIL);
}
huart3.Init.BaudRate = linecoding.bitrate;
huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart3.Init.Mode = UART_MODE_TX_RX;
/* Configure and enable the USART */
HAL_UART_Init(&huart3);
}
return USBD_OK;
}
/**
* @brief VCP_COMConfig
* Configure the COM Port with default values or values received from host.
* @param Conf: can be DEFAULT_CONFIG to set the default configuration or OTHER_CONFIG
* to set a configuration received from the host.
* @retval None.
*/
static uint16_t VCP_COMConfig(uint8_t Conf)
{
// BV: Not calling physical USART configuration
// Suggest we do not use this mechanism for any SPI configurations. But used some sort of serial commands.
// Not sure if it affects the data but just in case we should set 8N1 to ensure full 8-bit data transfer is done.
#if 0
if (Conf == DEFAULT_CONFIG)
{
/* EVAL_COM1 default configuration */
/* EVAL_COM1 configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- Parity Odd
- Hardware flow control disabled
- Receive and transmit enabled
*/
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_Odd;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/* Configure and enable the USART */
STM_EVAL_COMInit(COM1, &USART_InitStructure);
/* Enable the USART Receive interrupt */
USART_ITConfig(EVAL_COM1, USART_IT_RXNE, ENABLE);
}
else
{
/* set the Stop bit*/
switch (linecoding.format)
{
case 0:
USART_InitStructure.USART_StopBits = USART_StopBits_1;
break;
case 1:
USART_InitStructure.USART_StopBits = USART_StopBits_1_5;
break;
case 2:
USART_InitStructure.USART_StopBits = USART_StopBits_2;
break;
default :
VCP_COMConfig(DEFAULT_CONFIG);
return (USBD_FAIL);
}
/* set the parity bit*/
switch (linecoding.paritytype)
{
case 0:
USART_InitStructure.USART_Parity = USART_Parity_No;
break;
case 1:
USART_InitStructure.USART_Parity = USART_Parity_Even;
break;
case 2:
USART_InitStructure.USART_Parity = USART_Parity_Odd;
break;
default :
VCP_COMConfig(DEFAULT_CONFIG);
return (USBD_FAIL);
}
/*set the data type : only 8bits and 9bits is supported */
switch (linecoding.datatype)
{
case 0x07:
/* With this configuration a parity (Even or Odd) should be set */
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
break;
case 0x08:
if (USART_InitStructure.USART_Parity == USART_Parity_No)
{
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
}
else
{
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
}
break;
default :
VCP_COMConfig(DEFAULT_CONFIG);
return (USBD_FAIL);
}
USART_InitStructure.USART_BaudRate = linecoding.bitrate;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/* Configure and enable the USART */
STM_EVAL_COMInit(COM1, &USART_InitStructure);
}
#endif
return USBD_OK;
}
