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extmod/nimble: Add support for reading whole HCI UART packets. 

This can improve efficiency for Bluetooth systems that already process
whole packets at the lower layers.
This commit is contained in:
Andrew Leech 2022-05-25 12:41:51 +10:00 committed by Damien George
parent 19c680ff57
commit 91fb9e7888
2 changed files with 32 additions and 6 deletions
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11
extmod/mpbthci.h
View File

@ -27,6 +27,9 @@
#ifndef MICROPY_INCLUDED_EXTMOD_MPBTHCI_H
#define MICROPY_INCLUDED_EXTMOD_MPBTHCI_H
#define MICROPY_PY_BLUETOOTH_HCI_READ_MODE_BYTE (0)
#define MICROPY_PY_BLUETOOTH_HCI_READ_MODE_PACKET (1)
// --- Optionally can be implemented by the driver. ---------------------------
// Start/stop the HCI controller.
@ -46,7 +49,13 @@ int mp_bluetooth_hci_uart_init(uint32_t port, uint32_t baudrate);
int mp_bluetooth_hci_uart_deinit(void);
int mp_bluetooth_hci_uart_set_baudrate(uint32_t baudrate);
int mp_bluetooth_hci_uart_any(void);
int mp_bluetooth_hci_uart_readchar(void);
int mp_bluetooth_hci_uart_write(const uint8_t *buf, size_t len);
// Used for mode: MICROPY_PY_BLUETOOTH_HCI_READ_MODE_BYTE
int mp_bluetooth_hci_uart_readchar(void);
// Used for mode: MICROPY_PY_BLUETOOTH_HCI_READ_MODE_PACKET
typedef void (*mp_bluetooth_hci_uart_readchar_t)(uint8_t chr);
int mp_bluetooth_hci_uart_readpacket(mp_bluetooth_hci_uart_readchar_t handler);
#endif // MICROPY_INCLUDED_EXTMOD_MPBTHCI_H

27
extmod/nimble/hal/hal_uart.c
View File

@ -34,6 +34,10 @@
#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
#ifndef MICROPY_PY_BLUETOOTH_HCI_READ_MODE
#define MICROPY_PY_BLUETOOTH_HCI_READ_MODE MICROPY_PY_BLUETOOTH_HCI_READ_MODE_BYTE
#endif
#define HCI_TRACE (0)
static hal_uart_tx_cb_t hal_uart_tx_cb;
@ -86,15 +90,28 @@ int hal_uart_close(uint32_t port) {
return 0; // success
}
STATIC void mp_bluetooth_hci_uart_char_cb(uint8_t chr) {
#if HCI_TRACE
printf("> %02x\n", chr);
#endif
hal_uart_rx_cb(hal_uart_rx_arg, chr);
}
void mp_bluetooth_nimble_hci_uart_process(bool run_events) {
bool host_wake = mp_bluetooth_hci_controller_woken();
int chr;
while ((chr = mp_bluetooth_hci_uart_readchar()) >= 0) {
#if HCI_TRACE
printf("> %02x\n", chr);
for (;;) {
#if MICROPY_PY_BLUETOOTH_HCI_READ_MODE == MICROPY_PY_BLUETOOTH_HCI_READ_MODE_BYTE
int chr = mp_bluetooth_hci_uart_readchar();
if (chr < 0) {
break;
}
mp_bluetooth_hci_uart_char_cb(chr);
#elif MICROPY_PY_BLUETOOTH_HCI_READ_MODE == MICROPY_PY_BLUETOOTH_HCI_READ_MODE_PACKET
if (mp_bluetooth_hci_uart_readpacket(mp_bluetooth_hci_uart_char_cb) < 0) {
break;
}
#endif
hal_uart_rx_cb(hal_uart_rx_arg, chr);
// Incoming data may result in events being enqueued. If we're in
// scheduler context then we can run those events immediately.