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#ifndef RP2040_COMMON_H_
#define RP2040_COMMON_H_
#if defined(RP2040_USB_HOST_MODE) && defined(RP2040_USB_DEVICE_MODE)
#error TinyUSB device and host mode not supported at the same time
#endif
#include "common/tusb_common.h"
#include "pico.h"
#include "hardware/structs/usb.h"
#include "hardware/irq.h"
#include "hardware/resets.h"
#if defined(PICO_RP2040_USB_DEVICE_ENUMERATION_FIX) && !defined(TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX)
#define TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX PICO_RP2040_USB_DEVICE_ENUMERATION_FIX
#endif
#define pico_info(...) TU_LOG(2, __VA_ARGS__)
#define pico_trace(...) TU_LOG(3, __VA_ARGS__)
// Hardware information per endpoint
struct hw_endpoint
{
// Is this a valid struct
bool configured;
// Transfer direction (i.e. IN is rx for host but tx for device)
// allows us to common up transfer functions
bool rx;
uint8_t ep_addr;
uint8_t next_pid;
// Endpoint control register
io_rw_32 *endpoint_control;
// Buffer control register
io_rw_32 *buffer_control;
// Buffer pointer in usb dpram
uint8_t *hw_data_buf;
// Have we been stalled TODO remove later
bool stalled;
// Current transfer information
bool active;
uint16_t remaining_len;
uint16_t xferred_len;
// User buffer in main memory
uint8_t *user_buf;
// Data needed from EP descriptor
uint16_t wMaxPacketSize;
// Interrupt, bulk, etc
uint8_t transfer_type;
#if TUSB_OPT_HOST_ENABLED
// Only needed for host
uint8_t dev_addr;
// If interrupt endpoint
uint8_t interrupt_num;
#endif
};
void rp2040_usb_init(void);
void hw_endpoint_xfer_start(struct hw_endpoint *ep, uint8_t *buffer, uint16_t total_len);
bool hw_endpoint_xfer_continue(struct hw_endpoint *ep);
void hw_endpoint_reset_transfer(struct hw_endpoint *ep);
void _hw_endpoint_buffer_control_update32(struct hw_endpoint *ep, uint32_t and_mask, uint32_t or_mask);
static inline uint32_t _hw_endpoint_buffer_control_get_value32(struct hw_endpoint *ep) {
return *ep->buffer_control;
}
static inline void _hw_endpoint_buffer_control_set_value32(struct hw_endpoint *ep, uint32_t value) {
return _hw_endpoint_buffer_control_update32(ep, 0, value);
}
static inline void _hw_endpoint_buffer_control_set_mask32(struct hw_endpoint *ep, uint32_t value) {
return _hw_endpoint_buffer_control_update32(ep, ~value, value);
}
static inline void _hw_endpoint_buffer_control_clear_mask32(struct hw_endpoint *ep, uint32_t value) {
return _hw_endpoint_buffer_control_update32(ep, ~value, 0);
}
static inline uintptr_t hw_data_offset(uint8_t *buf)
{
// Remove usb base from buffer pointer
return (uintptr_t)buf ^ (uintptr_t)usb_dpram;
}
extern const char *ep_dir_string[];
typedef union TU_ATTR_PACKED
{
uint16_t u16;
struct TU_ATTR_PACKED
{
uint16_t xfer_len : 10;
uint16_t available : 1;
uint16_t stall : 1;
uint16_t reset_bufsel : 1;
uint16_t data_toggle : 1;
uint16_t last_buf : 1;
uint16_t full : 1;
};
} rp2040_buffer_control_t;
TU_VERIFY_STATIC(sizeof(rp2040_buffer_control_t) == 2, "size is not correct");
#if CFG_TUSB_DEBUG >= 3
static inline void print_bufctrl16(uint32_t u16)
{
rp2040_buffer_control_t bufctrl = {
.u16 = u16
};
TU_LOG(3, "len = %u, available = %u, full = %u, last = %u, stall = %u, reset = %u, toggle = %u\r\n",
bufctrl.xfer_len, bufctrl.available, bufctrl.full, bufctrl.last_buf, bufctrl.stall, bufctrl.reset_bufsel, bufctrl.data_toggle);
}
static inline void print_bufctrl32(uint32_t u32)
{
uint16_t u16;
u16 = u32 >> 16;
TU_LOG(3, " Buffer Control 1 0x%x: ", u16);
print_bufctrl16(u16);
u16 = u32 & 0x0000ffff;
TU_LOG(3, " Buffer Control 0 0x%x: ", u16);
print_bufctrl16(u16);
}
#else
#define print_bufctrl16(u16)
#define print_bufctrl32(u32)
#endif
#endif
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