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Converted device mode low-level demos to schedulerless.

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This commit is contained in:
Dean Camera 2009-06-07 07:20:33 +00:00
parent 2793c88fc6
commit 33a0184749
44 changed files with 590 additions and 1134 deletions
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89
Demos/Device/LowLevel/USBtoSerial/USBtoSerial.c
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@ -30,13 +30,6 @@
#include "USBtoSerial.h"
/* Scheduler Task List */
TASK_LIST
{
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
{ .Task = CDC_Task , .TaskStatus = TASK_STOP },
};
/* Globals: */
/** Contains the current baud rate and other settings of the virtual serial port.
*
@ -61,6 +54,24 @@ volatile bool Transmitting = false;
* starts the scheduler to run the application tasks.
*/
int main(void)
{
SetupHardware();
/* Ring buffer Initialization */
Buffer_Initialize(&Rx_Buffer);
Buffer_Initialize(&Tx_Buffer);
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
for (;;)
{
CDC_Task();
USB_USBTask();
}
}
/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
@ -72,22 +83,7 @@ int main(void)
/* Hardware Initialization */
LEDs_Init();
ReconfigureUSART();
/* Ring buffer Initialization */
Buffer_Initialize(&Rx_Buffer);
Buffer_Initialize(&Tx_Buffer);
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
/* Initialize Scheduler so that it can be used */
Scheduler_Init();
/* Initialize USB Subsystem */
USB_Init();
/* Scheduling - routine never returns, so put this last in the main function */
Scheduler_Start();
USB_Init();
}
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
@ -95,28 +91,21 @@ int main(void)
*/
void EVENT_USB_Connect(void)
{
/* Start USB management task */
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
* the status LEDs and stops the USB management and CDC management tasks.
*/
void EVENT_USB_Disconnect(void)
{
/* Stop running CDC and USB management tasks */
Scheduler_SetTaskMode(CDC_Task, TASK_STOP);
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
{
/* Reset Tx and Rx buffers, device disconnected */
Buffer_Initialize(&Rx_Buffer);
Buffer_Initialize(&Tx_Buffer);
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
@ -138,10 +127,7 @@ void EVENT_USB_ConfigurationChanged(void)
ENDPOINT_BANK_SINGLE);
/* Indicate USB connected and ready */
UpdateStatus(Status_USBReady);
/* Start CDC task */
Scheduler_SetTaskMode(CDC_Task, TASK_RUN);
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific
@ -207,7 +193,7 @@ void EVENT_USB_UnhandledControlPacket(void)
}
/** Task to manage CDC data transmission and reception to and from the host, from and to the physical USART. */
TASK(CDC_Task)
void CDC_Task(void)
{
if (USB_IsConnected)
{
@ -309,33 +295,6 @@ ISR(USART1_RX_vect, ISR_BLOCK)
}
}
/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to
* log to a serial port, or anything else that is suitable for status updates.
*
* \param CurrentStatus Current status of the system, from the USBtoSerial_StatusCodes_t enum
*/
void UpdateStatus(uint8_t CurrentStatus)
{
uint8_t LEDMask = LEDS_NO_LEDS;
/* Set the LED mask to the appropriate LED mask based on the given status code */
switch (CurrentStatus)
{
case Status_USBNotReady:
LEDMask = (LEDS_LED1);
break;
case Status_USBEnumerating:
LEDMask = (LEDS_LED1 | LEDS_LED2);
break;
case Status_USBReady:
LEDMask = (LEDS_LED2 | LEDS_LED4);
break;
}
/* Set the board LEDs to the new LED mask */
LEDs_SetAllLEDs(LEDMask);
}
/** Reconfigures the USART to match the current serial port settings issued by the host as closely as possible. */
void ReconfigureUSART(void)
{