Thanks to visit codestin.com
Credit goes to github.com

Skip to content

ports/mimxrt: Add CYW43 WiFi/BT support. #11397

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 6 commits into from
Aug 31, 2023
Merged

ports/mimxrt: Add CYW43 WiFi/BT support. #11397

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
6b407d5
mimxrt/machine_pin: Extend pin configuration functions.
iabdalkader May 2, 2023
46d83d9
mimxrt/sdio: Add SDIO driver.
iabdalkader May 2, 2023
772a360
mimxrt: Integrate support for WiFi via the CYW43 driver.
iabdalkader May 2, 2023
fc49524
mimxrt: Integrate Bluetooth support with NimBLE bindings.
iabdalkader May 9, 2023
a453b4f
drivers/cyw43: Make the CYW43 Bluetooth HCI driver more portable.
iabdalkader May 10, 2023
3f5976e
mimxrt/irq: Move all IRQ related definitions to dedicated header.
iabdalkader May 11, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
99 changes: 59 additions & 40 deletions drivers/cyw43/cywbt.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -29,42 +29,48 @@

#include "py/runtime.h"
#include "py/mphal.h"
#include "pin_static_af.h"
#include "uart.h"
#include "extmod/mpbthci.h"

#if MICROPY_PY_NETWORK_CYW43

#include "lib/cyw43-driver/src/cyw43_config.h"
#include "lib/cyw43-driver/firmware/cyw43_btfw_4343A1.h"

// Provided by the port.
extern pyb_uart_obj_t mp_bluetooth_hci_uart_obj;

// Provided by the port, and also possibly shared with the stack.
extern uint8_t mp_bluetooth_hci_cmd_buf[4 + 256];

/******************************************************************************/
// CYW BT HCI low-level driver

#ifdef CYW43_PIN_BT_CTS
// This code is not portable and currently only builds on stm32 port.

#include "pin_static_af.h"
#include "uart.h"

// Provided by the port.
extern pyb_uart_obj_t mp_bluetooth_hci_uart_obj;

STATIC void cywbt_wait_cts_low(void) {
mp_hal_pin_config(pyb_pin_BT_CTS, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_UP, 0);
mp_hal_pin_config(CYW43_PIN_BT_CTS, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_UP, 0);
for (int i = 0; i < 200; ++i) {
if (mp_hal_pin_read(pyb_pin_BT_CTS) == 0) {
if (mp_hal_pin_read(CYW43_PIN_BT_CTS) == 0) {
break;
}
mp_hal_delay_ms(1);
}
mp_hal_pin_config_alt(pyb_pin_BT_CTS, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_UP, AF_FN_UART, mp_bluetooth_hci_uart_obj.uart_id);
mp_hal_pin_config_alt(CYW43_PIN_BT_CTS, MP_HAL_PIN_MODE_ALT,
MP_HAL_PIN_PULL_UP, AF_FN_UART, mp_bluetooth_hci_uart_obj.uart_id);
}
#endif

STATIC int cywbt_hci_cmd_raw(size_t len, uint8_t *buf) {
uart_tx_strn(&mp_bluetooth_hci_uart_obj, (void*)buf, len);
for (int i = 0; i < 6; ++i) {
while (!uart_rx_any(&mp_bluetooth_hci_uart_obj)) {
mp_bluetooth_hci_uart_write((void *)buf, len);
for (int c, i = 0; i < 6; ++i) {
while ((c = mp_bluetooth_hci_uart_readchar()) == -1) {
MICROPY_EVENT_POLL_HOOK
}
buf[i] = uart_rx_char(&mp_bluetooth_hci_uart_obj);
buf[i] = c;
}

// expect a command complete event (event 0x0e)
Expand All @@ -80,11 +86,11 @@ STATIC int cywbt_hci_cmd_raw(size_t len, uint8_t *buf) {
*/

int sz = buf[2] - 3;
for (int i = 0; i < sz; ++i) {
while (!uart_rx_any(&mp_bluetooth_hci_uart_obj)) {
for (int c, i = 0; i < sz; ++i) {
while ((c = mp_bluetooth_hci_uart_readchar()) == -1) {
MICROPY_EVENT_POLL_HOOK
}
buf[i] = uart_rx_char(&mp_bluetooth_hci_uart_obj);
buf[i] = c;
}

return 0;
Expand Down Expand Up @@ -150,12 +156,15 @@ STATIC int cywbt_download_firmware(const uint8_t *firmware) {

// RF switch must select high path during BT patch boot
#if MICROPY_HW_ENABLE_RF_SWITCH
mp_hal_pin_config(pyb_pin_WL_GPIO_1, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_UP, 0);
mp_hal_pin_config(CYW43_PIN_WL_GPIO_1, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_UP, 0);
#endif
mp_hal_delay_ms(10); // give some time for CTS to go high
#ifdef CYW43_PIN_BT_CTS
cywbt_wait_cts_low();
#endif
#if MICROPY_HW_ENABLE_RF_SWITCH
mp_hal_pin_config(pyb_pin_WL_GPIO_1, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_DOWN, 0); // Select chip antenna (could also select external)
// Select chip antenna (could also select external)
mp_hal_pin_config(CYW43_PIN_WL_GPIO_1, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_DOWN, 0);
#endif

mp_bluetooth_hci_uart_set_baudrate(115200);
Expand All @@ -168,25 +177,33 @@ STATIC int cywbt_download_firmware(const uint8_t *firmware) {
int mp_bluetooth_hci_controller_init(void) {
// This is called immediately after the UART is initialised during stack initialisation.

mp_hal_pin_output(pyb_pin_BT_REG_ON);
mp_hal_pin_low(pyb_pin_BT_REG_ON);
mp_hal_pin_input(pyb_pin_BT_HOST_WAKE);
mp_hal_pin_output(pyb_pin_BT_DEV_WAKE);
mp_hal_pin_low(pyb_pin_BT_DEV_WAKE);
mp_hal_pin_output(CYW43_PIN_BT_REG_ON);
mp_hal_pin_low(CYW43_PIN_BT_REG_ON);
#ifdef CYW43_PIN_BT_HOST_WAKE
mp_hal_pin_input(CYW43_PIN_BT_HOST_WAKE);
#endif
#ifdef CYW43_PIN_BT_DEV_WAKE
mp_hal_pin_output(CYW43_PIN_BT_DEV_WAKE);
mp_hal_pin_low(CYW43_PIN_BT_DEV_WAKE);
#endif

#if MICROPY_HW_ENABLE_RF_SWITCH
// TODO don't select antenna if wifi is enabled
mp_hal_pin_config(pyb_pin_WL_GPIO_4, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0); // RF-switch power
mp_hal_pin_high(pyb_pin_WL_GPIO_4); // Turn the RF-switch on
mp_hal_pin_config(CYW43_PIN_WL_GPIO_4, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_NONE, 0); // RF-switch power
mp_hal_pin_high(CYW43_PIN_WL_GPIO_4); // Turn the RF-switch on
#endif

uint8_t buf[256];

mp_hal_pin_low(pyb_pin_BT_REG_ON);
mp_hal_pin_low(CYW43_PIN_BT_REG_ON);
mp_bluetooth_hci_uart_set_baudrate(115200);
mp_hal_delay_ms(100);
mp_hal_pin_high(pyb_pin_BT_REG_ON);
mp_hal_pin_high(CYW43_PIN_BT_REG_ON);
#ifdef CYW43_PIN_BT_CTS
cywbt_wait_cts_low();
#else
mp_hal_delay_ms(100);
#endif

// Reset
cywbt_hci_cmd(0x03, 0x0003, 0, NULL);
Expand All @@ -197,7 +214,7 @@ int mp_bluetooth_hci_controller_init(void) {
mp_bluetooth_hci_uart_set_baudrate(MICROPY_HW_BLE_UART_BAUDRATE_DOWNLOAD_FIRMWARE);
#endif

cywbt_download_firmware((const uint8_t*)&cyw43_btfw_4343A1[0]);
cywbt_download_firmware((const uint8_t *)&cyw43_btfw_4343A1[0]);

// Reset
cywbt_hci_cmd(0x03, 0x0003, 0, NULL);
Expand All @@ -219,40 +236,42 @@ int mp_bluetooth_hci_controller_init(void) {
// cywbt_hci_cmd(0x03, 0x0013, 248, buf);

// Configure sleep mode
cywbt_hci_cmd(0x3f, 0x27, 12, (const uint8_t*)"\x01\x02\x02\x00\x00\x00\x01\x00\x00\x00\x00\x00");
cywbt_hci_cmd(0x3f, 0x27, 12, (const uint8_t *)"\x01\x02\x02\x00\x00\x00\x01\x00\x00\x00\x00\x00");

// HCI_Write_LE_Host_Support
cywbt_hci_cmd(3, 109, 2, (const uint8_t*)"\x01\x00");
cywbt_hci_cmd(3, 109, 2, (const uint8_t *)"\x01\x00");

mp_hal_pin_high(pyb_pin_BT_DEV_WAKE); // let sleep
#ifdef CYW43_PIN_BT_DEV_WAKE
mp_hal_pin_high(CYW43_PIN_BT_DEV_WAKE); // let sleep
#endif

return 0;
}

int mp_bluetooth_hci_controller_deinit(void) {
mp_hal_pin_low(pyb_pin_BT_REG_ON);
mp_hal_pin_low(CYW43_PIN_BT_REG_ON);

return 0;
}

#ifdef pyb_pin_BT_DEV_WAKE
#ifdef CYW43_PIN_BT_DEV_WAKE
STATIC uint32_t bt_sleep_ticks;
#endif

int mp_bluetooth_hci_controller_sleep_maybe(void) {
#ifdef pyb_pin_BT_DEV_WAKE
if (mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 0) {
#ifdef CYW43_PIN_BT_DEV_WAKE
if (mp_hal_pin_read(CYW43_PIN_BT_DEV_WAKE) == 0) {
if (mp_hal_ticks_ms() - bt_sleep_ticks > 500) {
mp_hal_pin_high(pyb_pin_BT_DEV_WAKE); // let sleep
mp_hal_pin_high(CYW43_PIN_BT_DEV_WAKE); // let sleep
}
}
#endif
return 0;
}

bool mp_bluetooth_hci_controller_woken(void) {
#ifdef pyb_pin_BT_HOST_WAKE
bool host_wake = mp_hal_pin_read(pyb_pin_BT_HOST_WAKE);
#ifdef CYW43_PIN_BT_HOST_WAKE
bool host_wake = mp_hal_pin_read(CYW43_PIN_BT_HOST_WAKE);
/*
// this is just for info/tracing purposes
static bool last_host_wake = false;
Expand All @@ -268,11 +287,11 @@ bool mp_bluetooth_hci_controller_woken(void) {
}

int mp_bluetooth_hci_controller_wakeup(void) {
#ifdef pyb_pin_BT_DEV_WAKE
#ifdef CYW43_PIN_BT_DEV_WAKE
bt_sleep_ticks = mp_hal_ticks_ms();

if (mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 1) {
mp_hal_pin_low(pyb_pin_BT_DEV_WAKE); // wake up
if (mp_hal_pin_read(CYW43_PIN_BT_DEV_WAKE) == 1) {
mp_hal_pin_low(CYW43_PIN_BT_DEV_WAKE); // wake up
// Use delay_us rather than delay_ms to prevent running the scheduler (which
// might result in more BLE operations).
mp_hal_delay_us(5000); // can't go lower than this
Expand Down
10 changes: 10 additions & 0 deletions ports/mimxrt/Makefile
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,7 @@ SRC_C += \
pendsv.c \
pin.c \
sdcard.c \
sdio.c \
systick.c \
ticks.c \
tusb_port.c \
Expand Down Expand Up @@ -263,6 +264,14 @@ else
SRC_HAL_C += hal/$(FLEXSPI_FLASH_TYPE)_config.c
endif

ifeq ($(MICROPY_PY_BLUETOOTH),1)
SRC_C += mpbthciport.c
endif # MICROPY_PY_BLUETOOTH

ifeq ($(MICROPY_BLUETOOTH_NIMBLE),1)
SRC_C += mpnimbleport.c
endif

# Math library source files
ifeq ($(MICROPY_FLOAT_IMPL),double)
LIBM_SRC_C += $(addprefix lib/libm_dbl/,\
Expand Down Expand Up @@ -448,6 +457,7 @@ OBJ += $(PY_O)
OBJ += $(LIBM_O)
OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SHARED_SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(DRIVERS_SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_SS:.S=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_TINYUSB_C:.c=.o))
Expand Down
2 changes: 2 additions & 0 deletions ports/mimxrt/board_init.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@

#include CLOCK_CONFIG_H
#include "modmachine.h"
#include "irq.h"

const uint8_t dcd_data[] = { 0x00 };

Expand All @@ -63,6 +64,7 @@ void board_init(void) {

// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
NVIC_SetPriority(SysTick_IRQn, IRQ_PRI_SYSTICK);

// USB0
usb_phy0_init(0b0111, 0b0110, 0b0110); // Configure nominal values for D_CAL and TXCAL45DP/DN
Expand Down
Loading