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-rw-r--r--libmaple/libmaple_types.h2
-rw-r--r--libmaple/timers.h205
-rw-r--r--libmaple/usb/usb_callbacks.c390
3 files changed, 373 insertions, 224 deletions
diff --git a/libmaple/libmaple_types.h b/libmaple/libmaple_types.h
index a976a9e..8d216a8 100644
--- a/libmaple/libmaple_types.h
+++ b/libmaple/libmaple_types.h
@@ -45,6 +45,8 @@ typedef void (*voidFuncPtr)(void);
#define __io volatile
+#define ALWAYS_INLINE inline __attribute__((always_inline))
+
#ifndef NULL
#define NULL 0
#endif
diff --git a/libmaple/timers.h b/libmaple/timers.h
index 1d929db..8d28f60 100644
--- a/libmaple/timers.h
+++ b/libmaple/timers.h
@@ -144,7 +144,7 @@ typedef enum TimerMode {
TIMER_PWM, /**< This is the default mode for pins after
initialization. */
TIMER_OUTPUTCOMPARE, /**< In this mode, the timer counts from 0 to
- the overflow value repeatedly; every time
+ its reload value repeatedly; every time
the counter value reaches one of the
channel compare values, the corresponding
interrupt is fired. */
@@ -225,54 +225,203 @@ struct timer_dev {
extern struct timer_dev timer_dev_table[];
-/* Turn on timer with prescale as the divisor
- * void timer_init(uint32 timer, uint16 prescale)
- * timer -> {1-4}
- * prescale -> {1-65535}
+/**
+ * Initializes timer with prescale as the clock divisor.
+ *
+ * @param timer_num Timer number.
+ *
+ * @param prescale value in the range 1--65535 to use as a prescaler
+ * for timer counter increment frequency.
+ *
+ * @see timer_dev_num
+ * @see timer_set_prescaler()
+ * @see timer_set_mode()
+ */
+void timer_init(timer_dev_num timer_num, uint16 prescale);
+
+/**
+ * Quickly disable all timers. Calling this function is faster than,
+ * e.g., calling timer_set_mode() for all available timers/channels.
*/
-void timer_init(timer_dev_num, uint16);
void timer_disable_all(void);
-uint16 timer_get_count(timer_dev_num);
-void timer_set_count(timer_dev_num,uint16);
+/**
+ * Returns the timer's counter value. Due to function call overhead,
+ * this value is likely to be inaccurate if the counter is running
+ * with a low prescaler.
+ *
+ * @param timer_num the timer whose counter to return.
+ *
+ * @pre Timer has been initialized.
+ */
+uint16 timer_get_count(timer_dev_num timer_num);
+
+/**
+ * Sets the counter value for the given timer.
+ *
+ * @param timer_num the timer whose counter to set.
+ *
+ * @param value the new counter value.
+ *
+ * @pre Timer has been initialized.
+ */
+void timer_set_count(timer_dev_num timer_num, uint16 value);
+
+/**
+ * Stops the timer's counter from incrementing. Does not modify the
+ * timer's mode or settings.
+ *
+ * @param timer_num the timer to pause.
+ *
+ * @see timer_resume()
+ *
+ * @pre Timer has been initialized.
+ */
+void timer_pause(timer_dev_num timer_num);
-void timer_pause(timer_dev_num);
-void timer_resume(timer_dev_num);
+/**
+ * Starts the counter for the given timer. Does not modify the
+ * timer's mode or settings. The timer will begin counting on the
+ * first rising clock cycle after it has been re-enabled using this
+ * function.
+ *
+ * @param timer_num the timer to resume.
+ *
+ * @see timer_pause()
+ *
+ * @pre Timer has been initialized.
+ */
+void timer_resume(timer_dev_num timer_num);
+/**
+ * Returns the prescaler for the given timer.
+ *
+ * @param timer_num the timer whose prescaler to return.
+ *
+ * @see timer_set_prescaler()
+ *
+ * @pre Timer has been initialized.
+ */
uint16 timer_get_prescaler(timer_dev_num timer_num);
+
+/**
+ * Sets the prescaler for the given timer. This value goes into the
+ * PSC register, so it's 0-based (i.e., a prescale of 0 counts 1 tick
+ * per clock cycle). This prescale does not take effect until the
+ * next update event.
+ *
+ * @param timer_num the timer whose prescaler to set.
+ *
+ * @param prescale the new prescaler.
+ *
+ * @pre Timer has been initialized.
+ */
void timer_set_prescaler(timer_dev_num timer_num, uint16 prescale);
+/**
+ * Gets the reload value for the timer.
+ *
+ * @see timer_set_reload()
+ *
+ * @pre Timer has been initialized.
+ */
uint16 timer_get_reload(timer_dev_num timer_num);
+
+/**
+ * Sets the reload value for the timer.
+ *
+ * After this function returns, the timer's counter will reset to 0
+ * after it has reached the value max_reload.
+ *
+ * @pre Timer has been initialized.
+ */
void timer_set_reload(timer_dev_num timer_num, uint16 max_reload);
/* TODO: timer_get_mode */
-void timer_set_mode(timer_dev_num timer_num, uint8 channel_num, uint8 mode);
-uint16 timer_get_compare_value(timer_dev_num timer_num, uint8 channel_num);
-void timer_set_compare_value(timer_dev_num timer_num, uint8 channel_num, uint16 value);
+/**
+ * Set the mode of an individual timer channel.
+ *
+ * @see timer_disable_all()
+ * @see TimerMode
+ * @see timer_dev_num
+ * @pre Timer has been initialized.
+ */
+void timer_set_mode(timer_dev_num timer_num, uint8 channel, TimerMode mode);
+
+/**
+ * Get the compare value for the given timer channel.
+ * @see timer_set_compare_value()
+ * @see timer_dev_num
+ * @pre Timer has been initialized.
+ */
+uint16 timer_get_compare_value(timer_dev_num timer_num, uint8 channel);
-void timer_attach_interrupt(timer_dev_num timer_num, uint8 channel_num,
+/**
+ * Sets the compare value for a given timer channel. Useful for
+ * scheduling when interrupt handlers will be called.
+ *
+ * @see timer_attach_interrupt()
+ * @see timer_detach_interrupt()
+ * @see timer_set_reload()
+ * @see timer_dev_num
+ * @pre Timer has been initialized.
+ */
+void timer_set_compare_value(timer_dev_num timer_num, uint8 channel,
+ uint16 value);
+
+/**
+ * Detach the interrupt handler for the given timer channel, if any.
+ * After this function returns, any handler attached to the given
+ * channel will no longer be called.
+ *
+ * @see timer_attach_interrupt()
+ * @pre Timer has been initialized.
+ * @see timer_dev_num
+ */
+void timer_detach_interrupt(timer_dev_num timer_num, uint8 channel);
+
+/**
+ * Attach an interrupt handler for the given timer and channel. The
+ * given ISR, handler, will be called whenever the timer's counter
+ * reaches the compare value for the given timer and channel.
+ *
+ * @see timer_set_compare_value()
+ * @see timer_detach_interrupt()
+ * @see timer_set_mode()
+ * @see timer_dev_num
+ * @see voidFuncPtr
+ * @pre Timer has been initialized.
+ * @pre The channel's mode must be set to TIMER_OUTPUTCOMPARE, or the
+ * interrupt handler will not get called.
+ */
+void timer_attach_interrupt(timer_dev_num timer_num, uint8 channel,
voidFuncPtr handler);
-void timer_detach_interrupt(timer_dev_num timer_num, uint8 channel_num);
-/* generate UEV */
+/**
+ * Programmatically generate an update event on the given timer. This
+ * updates the prescaler, reloads the compare value (in upcounting
+ * mode, etc.).
+ *
+ * @pre Timer has been initialized.
+ */
void timer_generate_update(timer_dev_num timer_num);
-/* Turn on PWM with duty_cycle on the specified channel in timer.
- * This function takes in a pointer to the corresponding CCR
- * register for the pin cause it saves pwmWrite() a couple of
- * cycles.
+/**
+ * Turn on PWM with duty_cycle.
+ *
+ * @param ccr TIMERx_CHn_CCR, where x goes from 1 to NR_TIMERS,
+ * and n goes from 1 to 4.
+ *
+ * @param duty_cycle: A number between 0 and
+ * timer_get_compare_value(TIMERx, y), where x and y are as above.
*
- * void timer_pwm(uint8 channel, uint8 duty_cycle);
- * channel -> {TIMERx_CHn_CCR}
- * duty_cycle -> {0-65535}
+ * @pre Pin has been set to alternate function output.
*
- * PRECONDITIONS:
- * pin has been set to alternate function output
- * timer has been initialized
+ * @pre Timer has been initialized.
*/
-static inline void timer_pwm_write_ccr(TimerCCR CCR, uint16 duty_cycle) {
- *CCR = duty_cycle;
+static inline void timer_pwm_write_ccr(TimerCCR ccr, uint16 duty_cycle) {
+ *ccr = duty_cycle;
}
#ifdef __cplusplus
diff --git a/libmaple/usb/usb_callbacks.c b/libmaple/usb/usb_callbacks.c
index 4d7e57a..ccb0fdd 100644
--- a/libmaple/usb/usb_callbacks.c
+++ b/libmaple/usb/usb_callbacks.c
@@ -8,19 +8,19 @@
#include "usb_hardware.h"
ONE_DESCRIPTOR Device_Descriptor = {
- (uint8*)&usbVcomDescriptor_Device,
- sizeof(USB_Descriptor_Device)
+ (uint8*)&usbVcomDescriptor_Device,
+ sizeof(USB_Descriptor_Device)
};
ONE_DESCRIPTOR Config_Descriptor = {
- (uint8*)&usbVcomDescriptor_Config,
- 0x43//sizeof(USB_Descriptor_Config)
+ (uint8*)&usbVcomDescriptor_Config,
+ 0x43//sizeof(USB_Descriptor_Config)
};
ONE_DESCRIPTOR String_Descriptor[3] = {
- {(uint8*)&usbVcomDescriptor_LangID, USB_DESCRIPTOR_STRING_LEN(1)},
- {(uint8*)&usbVcomDescriptor_iManufacturer,USB_DESCRIPTOR_STRING_LEN(8)},
- {(uint8*)&usbVcomDescriptor_iProduct, USB_DESCRIPTOR_STRING_LEN(8)}
+ {(uint8*)&usbVcomDescriptor_LangID, USB_DESCRIPTOR_STRING_LEN(1)},
+ {(uint8*)&usbVcomDescriptor_iManufacturer,USB_DESCRIPTOR_STRING_LEN(8)},
+ {(uint8*)&usbVcomDescriptor_iProduct, USB_DESCRIPTOR_STRING_LEN(8)}
};
uint8 last_request = 0;
@@ -42,12 +42,12 @@ RESET_STATE reset_state = DTR_UNSET;
uint8 line_dtr_rts = 0;
void vcomDataTxCb(void) {
- /* do whatever after data has been sent to host */
+ /* do whatever after data has been sent to host */
- /* allows usbSendBytes to stop blocking */
+ /* allows usbSendBytes to stop blocking */
-
- countTx = 0; /* assumes tx transactions are atomic 64 bytes (nearly certain they are) */
+ /* assumes tx transactions are atomic 64 bytes (nearly certain they are) */
+ countTx = 0;
}
/* we could get arbitrarily complicated here for speed purposes
@@ -64,7 +64,7 @@ void vcomDataRxCb(void) {
SetEPRxStatus(VCOM_RX_ENDP,EP_RX_NAK);
/* todo, not checking very carefully for edge cases. USUALLY,
- if we emit the reset pulse and send 4 bytes, then newBytes
+ if we emit the reset pulse and send 4 bytes, then newBytes
should be 4. But its POSSIBLE that this would be violated
in some cases */
@@ -82,253 +82,251 @@ void vcomDataRxCb(void) {
int i;
USB_Bool cmpMatch = TRUE;
for (i=0; i<4; i++) {
- if (chkBuf[i] != cmpBuf[i]) {
- cmpMatch = FALSE;
- }
+ if (chkBuf[i] != cmpBuf[i]) {
+ cmpMatch = FALSE;
+ }
}
if (cmpMatch) {
- asm volatile("mov r0, %[stack_top] \n\t" // Reset the stack
- "mov sp, r0 \n\t"
- "mov r0, #1 \n\t"
- "mov r1, %[target_addr] \n\t"
- "mov r2, %[cpsr] \n\t"
- "push {r2} \n\t" // Fake xPSR
- "push {r1} \n\t" // Target address for PC
- "push {r0} \n\t" // Fake LR
- "push {r0} \n\t" // Fake R12
- "push {r0} \n\t" // Fake R3
- "push {r0} \n\t" // Fake R2
- "push {r0} \n\t" // Fake R1
- "push {r0} \n\t" // Fake R0
- "mov lr, %[exc_return] \n\t"
- "bx lr"
- :
- : [stack_top] "r" (STACK_TOP),
- [target_addr] "r" (target),
- [exc_return] "r" (EXC_RETURN),
- [cpsr] "r" (DEFAULT_CPSR)
- : "r0", "r1", "r2");
- /* should never get here */
+ asm volatile("mov r0, %[stack_top] \n\t" // Reset the stack
+ "mov sp, r0 \n\t"
+ "mov r0, #1 \n\t"
+ "mov r1, %[target_addr] \n\t"
+ "mov r2, %[cpsr] \n\t"
+ "push {r2} \n\t" // Fake xPSR
+ "push {r1} \n\t" // Target address for PC
+ "push {r0} \n\t" // Fake LR
+ "push {r0} \n\t" // Fake R12
+ "push {r0} \n\t" // Fake R3
+ "push {r0} \n\t" // Fake R2
+ "push {r0} \n\t" // Fake R1
+ "push {r0} \n\t" // Fake R0
+ "mov lr, %[exc_return] \n\t"
+ "bx lr"
+ :
+ : [stack_top] "r" (STACK_TOP),
+ [target_addr] "r" (target),
+ [exc_return] "r" (EXC_RETURN),
+ [cpsr] "r" (DEFAULT_CPSR)
+ : "r0", "r1", "r2");
+ /* should never get here */
}
}
}
-
-
PMAToUserBufferCopy(&vcomBufferRx[0],VCOM_RX_ADDR,newBytes);
}
void vcomManagementCb(void) {
-/* unused. This enpoint would callback if we had sent a linestate
- changed notification */
+ /* unused. This enpoint would callback if we had sent a linestate
+ changed notification */
}
u8* vcomGetSetLineCoding(uint16 length) {
- if (length == 0) {
- pInformation->Ctrl_Info.Usb_wLength = sizeof(USB_Line_Coding);
- }
- return (uint8*)&line_coding;
+ if (length == 0) {
+ pInformation->Ctrl_Info.Usb_wLength = sizeof(USB_Line_Coding);
+ }
+ return (uint8*)&line_coding;
}
vcomSetLineState(void) {
}
void usbInit(void) {
- pInformation->Current_Configuration = 0;
- usbPowerOn();
+ pInformation->Current_Configuration = 0;
+ usbPowerOn();
- _SetISTR(0);
- wInterrupt_Mask = ISR_MSK;
- _SetCNTR(wInterrupt_Mask);
+ _SetISTR(0);
+ wInterrupt_Mask = ISR_MSK;
+ _SetCNTR(wInterrupt_Mask);
- usbEnbISR();
- bDeviceState = UNCONNECTED;
+ usbEnbISR();
+ bDeviceState = UNCONNECTED;
}
void usbReset(void) {
- pInformation->Current_Configuration = 0;
-
- /* current feature is current bmAttributes */
- pInformation->Current_Feature = (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELF_POWERED);
-
- _SetBTABLE(USB_BTABLE_ADDRESS);
-
- /* setup control endpoint 0 */
- _SetEPType(ENDP0, EP_CONTROL);
- _SetEPTxStatus(ENDP0, EP_TX_STALL);
- _SetEPRxAddr(ENDP0,VCOM_CTRL_RX_ADDR);
- _SetEPTxAddr(ENDP0,VCOM_CTRL_TX_ADDR);
- Clear_Status_Out(ENDP0);
-
- SetEPRxCount(ENDP0, pProperty->MaxPacketSize);
- SetEPRxValid(ENDP0);
-
- /* setup management endpoint 1 */
- SetEPType (VCOM_NOTIFICATION_ENDP, EP_INTERRUPT);
- SetEPTxAddr (VCOM_NOTIFICATION_ENDP, VCOM_NOTIFICATION_ADDR);
- SetEPTxStatus (VCOM_NOTIFICATION_ENDP, EP_TX_NAK);
- SetEPRxStatus (VCOM_NOTIFICATION_ENDP, EP_RX_DIS);
-
- /* setup data endpoint OUT (rx) */
-/* SetEPType (VCOM_RX_ENDP, EP_BULK); */
-/* SetEPRxAddr (VCOM_RX_ENDP, VCOM_RX_ADDR); */
-/* SetEPRxCount (VCOM_RX_ENDP, VCOM_RX_EPSIZE); */
-/* // SetEPTxStatus (VCOM_RX_ENDP, EP_TX_DIS); */
-/* SetEPRxStatus (VCOM_RX_ENDP, EP_RX_VALID); */
-
- SetEPType (3, EP_BULK);
- SetEPRxAddr (3, 0x110);
- SetEPRxCount (3,64);
- // SetEPTxStatus (VCOM_RX_ENDP, EP_TX_DIS);
- SetEPRxStatus (3, EP_RX_VALID);
-
- /* setup data endpoint IN (tx) */
- SetEPType (VCOM_TX_ENDP, EP_BULK);
- SetEPTxAddr (VCOM_TX_ENDP, VCOM_TX_ADDR);
- SetEPTxStatus (VCOM_TX_ENDP, EP_TX_NAK);
- SetEPRxStatus (VCOM_TX_ENDP, EP_RX_DIS);
-
- bDeviceState = ATTACHED;
- SetDeviceAddress(0);
-
- /* reset the rx fifo */
- recvBufIn = 0;
- recvBufOut = 0;
- maxNewBytes = VCOM_RX_EPSIZE;
- countTx = 0;
+ pInformation->Current_Configuration = 0;
+
+ /* current feature is current bmAttributes */
+ pInformation->Current_Feature = (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELF_POWERED);
+
+ _SetBTABLE(USB_BTABLE_ADDRESS);
+
+ /* setup control endpoint 0 */
+ _SetEPType(ENDP0, EP_CONTROL);
+ _SetEPTxStatus(ENDP0, EP_TX_STALL);
+ _SetEPRxAddr(ENDP0,VCOM_CTRL_RX_ADDR);
+ _SetEPTxAddr(ENDP0,VCOM_CTRL_TX_ADDR);
+ Clear_Status_Out(ENDP0);
+
+ SetEPRxCount(ENDP0, pProperty->MaxPacketSize);
+ SetEPRxValid(ENDP0);
+
+ /* setup management endpoint 1 */
+ SetEPType (VCOM_NOTIFICATION_ENDP, EP_INTERRUPT);
+ SetEPTxAddr (VCOM_NOTIFICATION_ENDP, VCOM_NOTIFICATION_ADDR);
+ SetEPTxStatus (VCOM_NOTIFICATION_ENDP, EP_TX_NAK);
+ SetEPRxStatus (VCOM_NOTIFICATION_ENDP, EP_RX_DIS);
+
+ /* setup data endpoint OUT (rx) */
+ /* SetEPType (VCOM_RX_ENDP, EP_BULK); */
+ /* SetEPRxAddr (VCOM_RX_ENDP, VCOM_RX_ADDR); */
+ /* SetEPRxCount (VCOM_RX_ENDP, VCOM_RX_EPSIZE); */
+ /* // SetEPTxStatus (VCOM_RX_ENDP, EP_TX_DIS); */
+ /* SetEPRxStatus (VCOM_RX_ENDP, EP_RX_VALID); */
+
+ SetEPType (3, EP_BULK);
+ SetEPRxAddr (3, 0x110);
+ SetEPRxCount (3,64);
+ // SetEPTxStatus (VCOM_RX_ENDP, EP_TX_DIS);
+ SetEPRxStatus (3, EP_RX_VALID);
+
+ /* setup data endpoint IN (tx) */
+ SetEPType (VCOM_TX_ENDP, EP_BULK);
+ SetEPTxAddr (VCOM_TX_ENDP, VCOM_TX_ADDR);
+ SetEPTxStatus (VCOM_TX_ENDP, EP_TX_NAK);
+ SetEPRxStatus (VCOM_TX_ENDP, EP_RX_DIS);
+
+ bDeviceState = ATTACHED;
+ SetDeviceAddress(0);
+
+ /* reset the rx fifo */
+ recvBufIn = 0;
+ recvBufOut = 0;
+ maxNewBytes = VCOM_RX_EPSIZE;
+ countTx = 0;
}
void usbStatusIn(void) {
- /* adjust the usart line coding
- if we wish to couple the CDC line coding
- with the real usart port */
+ /* adjust the usart line coding
+ if we wish to couple the CDC line coding
+ with the real usart port */
}
void usbStatusOut(void) {
}
RESULT usbDataSetup(uint8 request) {
- uint8 *(*CopyRoutine)(uint16);
- CopyRoutine = NULL;
-
- if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
- switch (request) {
- case (GET_LINE_CODING):
- CopyRoutine = vcomGetSetLineCoding;
- last_request = GET_LINE_CODING;
- break;
- case (SET_LINE_CODING):
- CopyRoutine = vcomGetSetLineCoding;
- last_request = SET_LINE_CODING;
- break;
- default: break;
+ uint8 *(*CopyRoutine)(uint16);
+ CopyRoutine = NULL;
+
+ if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
+ switch (request) {
+ case (GET_LINE_CODING):
+ CopyRoutine = vcomGetSetLineCoding;
+ last_request = GET_LINE_CODING;
+ break;
+ case (SET_LINE_CODING):
+ CopyRoutine = vcomGetSetLineCoding;
+ last_request = SET_LINE_CODING;
+ break;
+ default: break;
+ }
}
- }
- if (CopyRoutine == NULL) {
- return USB_UNSUPPORT;
- }
+ if (CopyRoutine == NULL) {
+ return USB_UNSUPPORT;
+ }
- pInformation->Ctrl_Info.CopyData = CopyRoutine;
- pInformation->Ctrl_Info.Usb_wOffset = 0;
- (*CopyRoutine)(0);
- return USB_SUCCESS;
+ pInformation->Ctrl_Info.CopyData = CopyRoutine;
+ pInformation->Ctrl_Info.Usb_wOffset = 0;
+ (*CopyRoutine)(0);
+ return USB_SUCCESS;
}
RESULT usbNoDataSetup(u8 request) {
- uint8 new_signal;
-
- /* we support set com feature but dont handle it */
- if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
-
- switch (request) {
- case (SET_COMM_FEATURE):
- return USB_SUCCESS;
- case (SET_CONTROL_LINE_STATE):
- /* to reset the board, pull both dtr and rts low
- then pulse dtr by itself */
- new_signal = pInformation->USBwValues.bw.bb0 & (CONTROL_LINE_DTR | CONTROL_LINE_RTS);
- line_dtr_rts = new_signal & 0x03;
-
- switch (reset_state) {
- /* no default, covered enum */
- case DTR_UNSET:
- if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
- reset_state = DTR_LOW;
- } else {
- reset_state = DTR_HIGH;
- }
- break;
-
- case DTR_HIGH:
- if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
- reset_state = DTR_NEGEDGE;
- } else {
- reset_state = DTR_HIGH;
- }
- break;
-
- case DTR_NEGEDGE:
- if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
- reset_state = DTR_LOW;
- } else {
- reset_state = DTR_HIGH;
- }
- break;
-
- case DTR_LOW:
- if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
- reset_state = DTR_LOW;
- } else {
- reset_state = DTR_HIGH;
- }
- break;
- }
-
- return USB_SUCCESS;
+ uint8 new_signal;
+
+ /* we support set com feature but dont handle it */
+ if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) {
+
+ switch (request) {
+ case (SET_COMM_FEATURE):
+ return USB_SUCCESS;
+ case (SET_CONTROL_LINE_STATE):
+ /* to reset the board, pull both dtr and rts low
+ then pulse dtr by itself */
+ new_signal = pInformation->USBwValues.bw.bb0 & (CONTROL_LINE_DTR | CONTROL_LINE_RTS);
+ line_dtr_rts = new_signal & 0x03;
+
+ switch (reset_state) {
+ /* no default, covered enum */
+ case DTR_UNSET:
+ if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
+ reset_state = DTR_LOW;
+ } else {
+ reset_state = DTR_HIGH;
+ }
+ break;
+
+ case DTR_HIGH:
+ if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
+ reset_state = DTR_NEGEDGE;
+ } else {
+ reset_state = DTR_HIGH;
+ }
+ break;
+
+ case DTR_NEGEDGE:
+ if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
+ reset_state = DTR_LOW;
+ } else {
+ reset_state = DTR_HIGH;
+ }
+ break;
+
+ case DTR_LOW:
+ if ((new_signal & CONTROL_LINE_DTR) == 0 ) {
+ reset_state = DTR_LOW;
+ } else {
+ reset_state = DTR_HIGH;
+ }
+ break;
+ }
+
+ return USB_SUCCESS;
+ }
}
- }
- return USB_UNSUPPORT;
+ return USB_UNSUPPORT;
}
RESULT usbGetInterfaceSetting(uint8 interface, uint8 alt_setting) {
- if (alt_setting > 0) {
- return USB_UNSUPPORT;
- } else if (interface > 1) {
- return USB_UNSUPPORT;
- }
+ if (alt_setting > 0) {
+ return USB_UNSUPPORT;
+ } else if (interface > 1) {
+ return USB_UNSUPPORT;
+ }
- return USB_SUCCESS;
+ return USB_SUCCESS;
}
u8* usbGetDeviceDescriptor(u16 length) {
- return Standard_GetDescriptorData(length, &Device_Descriptor);
+ return Standard_GetDescriptorData(length, &Device_Descriptor);
}
u8* usbGetConfigDescriptor(u16 length) {
- return Standard_GetDescriptorData(length, &Config_Descriptor);
+ return Standard_GetDescriptorData(length, &Config_Descriptor);
}
u8* usbGetStringDescriptor(u16 length) {
- uint8 wValue0 = pInformation->USBwValue0;
+ uint8 wValue0 = pInformation->USBwValue0;
- if (wValue0 > 2) {
- return NULL;
- }
- return Standard_GetDescriptorData(length, &String_Descriptor[wValue0]);
+ if (wValue0 > 2) {
+ return NULL;
+ }
+ return Standard_GetDescriptorData(length, &String_Descriptor[wValue0]);
}
/* internal callbacks to respond to standard requests */
void usbSetConfiguration(void) {
- if (pInformation->Current_Configuration != 0) {
- bDeviceState = CONFIGURED;
- }
+ if (pInformation->Current_Configuration != 0) {
+ bDeviceState = CONFIGURED;
+ }
}
void usbSetDeviceAddress(void) {
- bDeviceState = ADDRESSED;
+ bDeviceState = ADDRESSED;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 11:55:20 +0000