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#include <string.h>
#include "usb_core.h"
#include "usbd_core.h"
#include "usbd_cdc_core.h"
#include "usbd_pyb_core.h"
#include "usbd_usr.h"
#include "usbd_desc.h"
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "pendsv.h"
#include "usb.h"
#ifdef USE_DEVICE_MODE
extern CDC_IF_Prop_TypeDef VCP_fops;
#endif
USB_OTG_CORE_HANDLE USB_OTG_Core;
static int dev_is_enabled = 0;
uint32_t APP_dev_is_connected = 0; /* used by usbd_cdc_vcp */
static char rx_buf[64];
static int rx_buf_in;
static int rx_buf_out;
static int interrupt_char = VCP_CHAR_NONE;
mp_obj_t mp_const_vcp_interrupt = MP_OBJ_NULL;
void pyb_usb_dev_init(int usb_dev_type) {
#ifdef USE_DEVICE_MODE
if (!dev_is_enabled) {
// only init USB once in the device's power-lifetime
switch (usb_dev_type) {
case PYB_USB_DEV_VCP_MSC:
USBD_Init(&USB_OTG_Core, USB_OTG_FS_CORE_ID, &USR_desc, &USBD_PYB_cb, &USR_cb);
break;
case PYB_USB_DEV_HID:
USBD_Init(&USB_OTG_Core, USB_OTG_FS_CORE_ID, &USR_desc, &USBD_PYB_HID_cb, &USR_cb);
break;
}
}
rx_buf_in = 0;
rx_buf_out = 0;
interrupt_char = VCP_CHAR_NONE;
dev_is_enabled = 1;
// create an exception object for interrupting by VCP
mp_const_vcp_interrupt = mp_obj_new_exception_msg(&mp_type_OSError, "VCPInterrupt");
#endif
}
bool usb_vcp_is_enabled(void) {
return dev_is_enabled;
}
bool usb_vcp_is_connected(void) {
return APP_dev_is_connected;
}
void usb_vcp_set_interrupt_char(int c) {
if (dev_is_enabled) {
interrupt_char = c;
}
}
void usb_vcp_receive(const char *buf, uint32_t len) {
if (dev_is_enabled) {
for (int i = 0; i < len; i++) {
// catch special interrupt character
if (buf[i] == interrupt_char) {
// raise exception when interrupts are finished
mp_obj_exception_clear_traceback(mp_const_vcp_interrupt);
pendsv_nlr_jump(mp_const_vcp_interrupt);
interrupt_char = VCP_CHAR_NONE;
continue;
}
rx_buf[rx_buf_in++] = buf[i];
if (rx_buf_in >= sizeof(rx_buf)) {
rx_buf_in = 0;
}
if (rx_buf_in == rx_buf_out) {
rx_buf_out = rx_buf_in + 1;
if (rx_buf_out >= sizeof(rx_buf)) {
rx_buf_out = 0;
}
}
}
}
}
int usb_vcp_rx_any(void) {
if (rx_buf_in >= rx_buf_out) {
return rx_buf_in - rx_buf_out;
} else {
return rx_buf_in + sizeof(rx_buf) - rx_buf_out;
}
}
char usb_vcp_rx_get(void) {
while (rx_buf_out == rx_buf_in) {
}
char c = rx_buf[rx_buf_out];
rx_buf_out += 1;
if (rx_buf_out >= sizeof(rx_buf)) {
rx_buf_out = 0;
}
return c;
}
void usb_vcp_send_str(const char *str) {
usb_vcp_send_strn(str, strlen(str));
}
void usb_vcp_send_strn(const char *str, int len) {
#ifdef USE_DEVICE_MODE
if (dev_is_enabled) {
VCP_fops.pIf_DataTx((const uint8_t*)str, len);
}
#endif
}
#include "usbd_conf.h"
/* These are external variables imported from CDC core to be used for IN
transfer management. */
#ifdef USE_DEVICE_MODE
extern uint8_t APP_Rx_Buffer []; /* Write CDC received data in this buffer.
These data will be sent over USB IN endpoint
in the CDC core functions. */
extern uint32_t APP_Rx_ptr_in; /* Increment this pointer or roll it back to
start address when writing received data
in the buffer APP_Rx_Buffer. */
#endif
void usb_vcp_send_strn_cooked(const char *str, int len) {
#ifdef USE_DEVICE_MODE
for (const char *top = str + len; str < top; str++) {
if (*str == '\n') {
APP_Rx_Buffer[APP_Rx_ptr_in] = '\r';
APP_Rx_ptr_in = (APP_Rx_ptr_in + 1) & (APP_RX_DATA_SIZE - 1);
}
APP_Rx_Buffer[APP_Rx_ptr_in] = *str;
APP_Rx_ptr_in = (APP_Rx_ptr_in + 1) & (APP_RX_DATA_SIZE - 1);
}
#endif
}
void usb_hid_send_report(uint8_t *buf) {
#ifdef USE_DEVICE_MODE
USBD_HID_SendReport(&USB_OTG_Core, buf, 4);
#endif
}
/******************************************************************************/
// code for experimental USB OTG support
#ifdef USE_HOST_MODE
#include "led.h"
#include "usbh_core.h"
#include "usbh_usr.h"
#include "usbh_hid_core.h"
#include "usbh_hid_keybd.h"
#include "usbh_hid_mouse.h"
__ALIGN_BEGIN USBH_HOST USB_Host __ALIGN_END ;
static int host_is_enabled = 0;
void pyb_usb_host_init(void) {
if (!host_is_enabled) {
// only init USBH once in the device's power-lifetime
/* Init Host Library */
USBH_Init(&USB_OTG_Core, USB_OTG_FS_CORE_ID, &USB_Host, &HID_cb, &USR_Callbacks);
}
host_is_enabled = 1;
}
void pyb_usb_host_process(void) {
USBH_Process(&USB_OTG_Core, &USB_Host);
}
uint8_t usb_keyboard_key = 0;
// TODO this is an ugly hack to get key presses
uint pyb_usb_host_get_keyboard(void) {
uint key = usb_keyboard_key;
usb_keyboard_key = 0;
return key;
}
void USR_MOUSE_Init(void) {
led_state(4, 1);
USB_OTG_BSP_mDelay(100);
led_state(4, 0);
}
void USR_MOUSE_ProcessData(HID_MOUSE_Data_TypeDef *data) {
led_state(4, 1);
USB_OTG_BSP_mDelay(50);
led_state(4, 0);
}
void USR_KEYBRD_Init(void) {
led_state(4, 1);
USB_OTG_BSP_mDelay(100);
led_state(4, 0);
}
void USR_KEYBRD_ProcessData(uint8_t pbuf) {
led_state(4, 1);
USB_OTG_BSP_mDelay(50);
led_state(4, 0);
//lcd_print_strn((char*)&pbuf, 1);
usb_keyboard_key = pbuf;
}
#endif // USE_HOST_MODE
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