Updated all host mode demos and projects to use the EVENT_USB_Host_DeviceEnumerationComplete() event callback for device configuration instead of manual host state machine manipulations in the main application task.
Added new USB_Host_ConfigurationNumber global variable to indicate the selected configuration in an attached device. Renamed global state variables that are specific to a certain USB mode to clearly indicate which mode the variable relates to, by changing the USB_* prefix to USB_Device_* or USB_Host_*. Removed the HOST_STATE_WaitForDeviceRemoval and HOST_STATE_Suspended host state machine states, as these are no longer required. Altered the USB_Host_SetDeviceConfiguration() function to update the new USB_Host_ConfigurationNumber global as required. Moved out the Host mode standard request convenience/helper functions from the architecture specific Host driver files to the architecture agnostic HostStandardReq.c driver file.
This commit is contained in:
Dean Camera
parent
bcb627e1a1
commit
137ce280c1
96 changed files with 3053 additions and 3656 deletions
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@ -50,7 +50,6 @@ int main(void)
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for (;;)
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{
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Audio_Task();
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USB_USBTask();
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}
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}
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@ -97,6 +96,81 @@ void EVENT_USB_Host_DeviceUnattached(void)
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*/
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void EVENT_USB_Host_DeviceEnumerationComplete(void)
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{
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puts_P(PSTR("Getting Config Data.\r\n"));
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uint8_t ErrorCode;
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/* Get and process the configuration descriptor data */
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if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
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{
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if (ErrorCode == ControlError)
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puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
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else
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puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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return;
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}
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/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
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if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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return;
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}
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if ((ErrorCode = USB_Host_SetInterfaceAltSetting(StreamingInterfaceIndex,
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StreamingInterfaceAltSetting)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Could not set alternative streaming interface setting.\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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USB_Host_SetDeviceConfiguration(0);
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return;
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}
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT),
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.bRequest = AUDIO_REQ_SetCurrent,
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.wValue = (AUDIO_EPCONTROL_SamplingFreq << 8),
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.wIndex = StreamingEndpointAddress,
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.wLength = sizeof(USB_Audio_SampleFreq_t),
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};
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USB_Audio_SampleFreq_t SampleRate = AUDIO_SAMPLE_FREQ(48000);
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/* Select the control pipe for the request transfer */
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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/* Set the sample rate on the streaming interface endpoint */
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if ((ErrorCode = USB_Host_SendControlRequest(&SampleRate)) != HOST_SENDCONTROL_Successful)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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USB_Host_SetDeviceConfiguration(0);
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return;
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}
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/* Sample reload timer initialization */
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TIMSK0 = (1 << OCIE0A);
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OCR0A = ((F_CPU / 8 / 48000) - 1);
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TCCR0A = (1 << WGM01); // CTC mode
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TCCR0B = (1 << CS01); // Fcpu/8 speed
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/* Set speaker as output */
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DDRC |= (1 << 6);
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/* PWM speaker timer initialization */
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TCCR3A = ((1 << WGM30) | (1 << COM3A1) | (1 << COM3A0)); // Set on match, clear on TOP
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TCCR3B = ((1 << WGM32) | (1 << CS30)); // Fast 8-Bit PWM, F_CPU speed
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puts_P(PSTR("Microphone Enumerated.\r\n"));
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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}
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@ -126,109 +200,6 @@ void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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void Audio_Task(void)
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{
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uint8_t ErrorCode;
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switch (USB_HostState)
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{
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case HOST_STATE_Addressed:
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puts_P(PSTR("Getting Config Data.\r\n"));
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/* Get and process the configuration descriptor data */
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if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
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{
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if (ErrorCode == ControlError)
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puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
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else
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puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
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if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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if ((ErrorCode = USB_Host_SetInterfaceAltSetting(StreamingInterfaceIndex,
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StreamingInterfaceAltSetting)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Could not set alternative streaming interface setting.\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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USB_ControlRequest = (USB_Request_Header_t)
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{
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.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT),
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.bRequest = AUDIO_REQ_SetCurrent,
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.wValue = (AUDIO_EPCONTROL_SamplingFreq << 8),
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.wIndex = StreamingEndpointAddress,
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.wLength = sizeof(USB_Audio_SampleFreq_t),
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};
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USB_Audio_SampleFreq_t SampleRate = AUDIO_SAMPLE_FREQ(48000);
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/* Select the control pipe for the request transfer */
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Pipe_SelectPipe(PIPE_CONTROLPIPE);
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/* Set the sample rate on the streaming interface endpoint */
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if ((ErrorCode = USB_Host_SendControlRequest(&SampleRate)) != HOST_SENDCONTROL_Successful)
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{
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/* Indicate error status */
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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break;
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}
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/* Sample reload timer initialization */
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TIMSK0 = (1 << OCIE0A);
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OCR0A = ((F_CPU / 8 / 48000) - 1);
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TCCR0A = (1 << WGM01); // CTC mode
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TCCR0B = (1 << CS01); // Fcpu/8 speed
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/* Set speaker as output */
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DDRC |= (1 << 6);
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/* PWM speaker timer initialization */
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TCCR3A = ((1 << WGM30) | (1 << COM3A1) | (1 << COM3A0)); // Set on match, clear on TOP
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TCCR3B = ((1 << WGM32) | (1 << CS30)); // Fast 8-Bit PWM, F_CPU speed
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puts_P(PSTR("Microphone Enumerated.\r\n"));
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USB_HostState = HOST_STATE_Configured;
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break;
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case HOST_STATE_Configured:
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/* Do nothing - audio stream is handled by the timer interrupt routine */
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break;
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}
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}
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/** ISR to handle the reloading of the PWM timer with the next sample. */
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ISR(TIMER0_COMPA_vect, ISR_BLOCK)
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{
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