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micropython/ports/stm32/rfcore.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Damien P. George
* Copyright (c) 2020 Jim Mussared
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include "py/mperrno.h"
#include "py/mphal.h"
#include "py/runtime.h"
#include "extmod/modbluetooth.h"
#include "mpbthciport.h"
#include "rtc.h"
#include "rfcore.h"
#if defined(STM32WB)
#include "stm32wbxx_ll_ipcc.h"
#if MICROPY_PY_BLUETOOTH
#if MICROPY_BLUETOOTH_NIMBLE
// For mp_bluetooth_nimble_hci_uart_wfi
#include "nimble/nimble_npl.h"
#else
#error "STM32WB must use NimBLE."
#endif
#if !MICROPY_PY_BLUETOOTH_USE_SYNC_EVENTS
#error "STM32WB must use synchronous BLE events."
#endif
#endif
#define DEBUG_printf(...) // printf("rfcore: " __VA_ARGS__)
// Define to 1 to print traces of HCI packets
#define HCI_TRACE (0)
#define IPCC_CH_BLE (LL_IPCC_CHANNEL_1) // BLE HCI command and response
#define IPCC_CH_SYS (LL_IPCC_CHANNEL_2) // system HCI command and response
#define IPCC_CH_MM (LL_IPCC_CHANNEL_4) // release buffer
#define IPCC_CH_HCI_ACL (LL_IPCC_CHANNEL_6) // HCI ACL outgoing data
#define OGF_CTLR_BASEBAND (0x03)
#define OCF_CB_RESET (0x03)
#define OCF_CB_SET_EVENT_MASK2 (0x63)
#define OGF_VENDOR (0x3f)
#define OCF_WRITE_CONFIG (0x0c)
#define OCF_SET_TX_POWER (0x0f)
#define OCF_BLE_INIT (0x66)
#define OCF_C2_FLASH_ERASE_ACTIVITY (0x69)
#define OCF_C2_SET_FLASH_ACTIVITY_CONTROL (0x73)
#define HCI_OPCODE(ogf, ocf) ((ogf) << 10 | (ocf))
#define HCI_KIND_BT_CMD (0x01) // <kind=1>...?
#define HCI_KIND_BT_ACL (0x02) // <kind=2><?><?><len LSB><len MSB>
#define HCI_KIND_BT_EVENT (0x04) // <kind=4><op><len><data...>
#define HCI_KIND_VENDOR_RESPONSE (0x11)
#define HCI_KIND_VENDOR_EVENT (0x12)
#define HCI_EVENT_COMMAND_COMPLETE (0x0E) // <num packets><opcode 16><status><data...>
#define HCI_EVENT_COMMAND_STATUS (0x0F) // <status><num_packets><opcode 16>
#define HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS (0x13) // <num>(<handle 16><completed 16>)*
#define SYS_ACK_TIMEOUT_MS (250)
#define BLE_ACK_TIMEOUT_MS (250)
// AN5185
#define MAGIC_FUS_ACTIVE 0xA94656B9
// AN5289
#define MAGIC_IPCC_MEM_INCORRECT 0x3DE96F61
volatile bool hci_acl_cmd_pending = false;
typedef struct _tl_list_node_t {
volatile struct _tl_list_node_t *next;
volatile struct _tl_list_node_t *prev;
uint8_t body[0];
} tl_list_node_t;
typedef struct _parse_hci_info_t {
rfcore_ble_msg_callback_t cb_fun;
void *cb_env;
bool was_hci_reset_evt;
} parse_hci_info_t;
// Version
// [0:3] = Build - 0: Untracked - 15:Released - x: Tracked version
// [4:7] = branch - 0: Mass Market - x: ...
// [8:15] = Subversion
// [16:23] = Version minor
// [24:31] = Version major
// Memory Size
// [0:7] = Flash (Number of 4k sectors)
// [8:15] = Reserved (Shall be set to 0 - may be used as flash extension)
// [16:23] = SRAM2b (Number of 1k sectors)
// [24:31] = SRAM2a (Number of 1k sectors)
typedef union __attribute__((packed)) _ipcc_device_info_table_t {
struct {
uint32_t table_state;
uint8_t reserved0;
uint8_t last_fus_state;
uint8_t last_ws_state;
uint8_t ws_type;
uint32_t safeboot_version;
uint32_t fus_version;
uint32_t fus_memorysize;
uint32_t ws_version;
uint32_t ws_memorysize;
uint32_t ws_ble_info;
uint32_t ws_thread_info;
uint32_t reserved1;
uint64_t uid64;
uint16_t device_id;
uint16_t pad;
} fus;
struct {
uint32_t safeboot_version;
uint32_t fus_version;
uint32_t fus_memorysize;
uint32_t fus_info;
uint32_t fw_version;
uint32_t fw_memorysize;
uint32_t fw_infostack;
uint32_t fw_reserved;
} ws;
} ipcc_device_info_table_t;
typedef struct __attribute__((packed)) _ipcc_ble_table_t {
uint8_t *pcmd_buffer;
uint8_t *pcs_buffer;
tl_list_node_t *pevt_queue;
uint8_t *phci_acl_data_buffer;
} ipcc_ble_table_t;
// msg
// [0:7] = cmd/evt
// [8:31] = Reserved
typedef struct __attribute__((packed)) _ipcc_sys_table_t {
uint8_t *pcmd_buffer;
tl_list_node_t *sys_queue;
} ipcc_sys_table_t;
typedef struct __attribute__((packed)) _ipcc_mem_manager_table_t {
uint8_t *spare_ble_buffer;
uint8_t *spare_sys_buffer;
uint8_t *blepool;
uint32_t blepoolsize;
tl_list_node_t *pevt_free_buffer_queue;
uint8_t *traces_evt_pool;
uint32_t tracespoolsize;
} ipcc_mem_manager_table_t;
typedef struct __attribute__((packed)) _ipcc_ref_table_t {
ipcc_device_info_table_t *p_device_info_table;
ipcc_ble_table_t *p_ble_table;
void *p_thread_table;
ipcc_sys_table_t *p_sys_table;
ipcc_mem_manager_table_t *p_mem_manager_table;
void *p_traces_table;
void *p_mac_802_15_4_table;
void *p_zigbee_table;
void *p_lld_tests_table;
void *p_lld_ble_table;
} ipcc_ref_table_t;
// The stm32wb55xg.ld script puts .bss.ipcc_mem_* into SRAM2A and .bss_ipcc_membuf_* into SRAM2B.
// It also leaves 64 bytes at the start of SRAM2A for the ref table.
STATIC ipcc_device_info_table_t ipcc_mem_dev_info_tab; // mem1
STATIC ipcc_ble_table_t ipcc_mem_ble_tab; // mem1
STATIC ipcc_sys_table_t ipcc_mem_sys_tab; // mem1
STATIC ipcc_mem_manager_table_t ipcc_mem_memmgr_tab; // mem1
STATIC uint8_t ipcc_membuf_sys_cmd_buf[272]; // mem2
STATIC tl_list_node_t ipcc_mem_sys_queue; // mem1
STATIC tl_list_node_t ipcc_mem_memmgr_free_buf_queue; // mem1
STATIC uint8_t ipcc_membuf_memmgr_ble_spare_evt_buf[272]; // mem2
STATIC uint8_t ipcc_membuf_memmgr_sys_spare_evt_buf[272]; // mem2
STATIC uint8_t ipcc_membuf_memmgr_evt_pool[6 * 272]; // mem2
STATIC uint8_t ipcc_membuf_ble_cmd_buf[272]; // mem2
STATIC uint8_t ipcc_membuf_ble_cs_buf[272]; // mem2
STATIC tl_list_node_t ipcc_mem_ble_evt_queue; // mem1
STATIC uint8_t ipcc_membuf_ble_hci_acl_data_buf[272]; // mem2
/******************************************************************************/
// Transport layer linked list
STATIC void tl_list_init(volatile tl_list_node_t *n) {
n->next = n;
n->prev = n;
}
STATIC volatile tl_list_node_t *tl_list_unlink(volatile tl_list_node_t *n) {
volatile tl_list_node_t *next = n->next;
volatile tl_list_node_t *prev = n->prev;
prev->next = next;
next->prev = prev;
return next;
}
STATIC void tl_list_append(volatile tl_list_node_t *head, volatile tl_list_node_t *n) {
n->next = head;
n->prev = head->prev;
head->prev->next = n;
head->prev = n;
}
/******************************************************************************/
// IPCC interface
STATIC volatile ipcc_ref_table_t *get_buffer_table(void) {
// The IPCCDBA option bytes must not be changed without
// making a corresponding change to the linker script.
return (volatile ipcc_ref_table_t *)(SRAM2A_BASE + LL_FLASH_GetIPCCBufferAddr() * 4);
}
void ipcc_init(uint32_t irq_pri) {
DEBUG_printf("ipcc_init\n");
// Setup buffer table pointers
volatile ipcc_ref_table_t *tab = get_buffer_table();
tab->p_device_info_table = &ipcc_mem_dev_info_tab;
tab->p_ble_table = &ipcc_mem_ble_tab;
tab->p_sys_table = &ipcc_mem_sys_tab;
tab->p_mem_manager_table = &ipcc_mem_memmgr_tab;
// Start IPCC peripheral
__HAL_RCC_IPCC_CLK_ENABLE();
// Enable receive IRQ on the BLE channel.
LL_C1_IPCC_EnableIT_RXO(IPCC);
LL_C1_IPCC_DisableReceiveChannel(IPCC, LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 | LL_IPCC_CHANNEL_4 | LL_IPCC_CHANNEL_5 | LL_IPCC_CHANNEL_6);
LL_C1_IPCC_EnableReceiveChannel(IPCC, IPCC_CH_BLE);
NVIC_SetPriority(IPCC_C1_RX_IRQn, irq_pri);
HAL_NVIC_EnableIRQ(IPCC_C1_RX_IRQn);
// Device info table will be populated by FUS/WS on CPU2 boot.
// Populate system table
tl_list_init(&ipcc_mem_sys_queue);
ipcc_mem_sys_tab.pcmd_buffer = ipcc_membuf_sys_cmd_buf;
ipcc_mem_sys_tab.sys_queue = &ipcc_mem_sys_queue;
// Populate memory manager table
tl_list_init(&ipcc_mem_memmgr_free_buf_queue);
ipcc_mem_memmgr_tab.spare_ble_buffer = ipcc_membuf_memmgr_ble_spare_evt_buf;
ipcc_mem_memmgr_tab.spare_sys_buffer = ipcc_membuf_memmgr_sys_spare_evt_buf;
ipcc_mem_memmgr_tab.blepool = ipcc_membuf_memmgr_evt_pool;
ipcc_mem_memmgr_tab.blepoolsize = sizeof(ipcc_membuf_memmgr_evt_pool);
ipcc_mem_memmgr_tab.pevt_free_buffer_queue = &ipcc_mem_memmgr_free_buf_queue;
ipcc_mem_memmgr_tab.traces_evt_pool = NULL;
ipcc_mem_memmgr_tab.tracespoolsize = 0;
// Populate BLE table
tl_list_init(&ipcc_mem_ble_evt_queue);
ipcc_mem_ble_tab.pcmd_buffer = ipcc_membuf_ble_cmd_buf;
ipcc_mem_ble_tab.pcs_buffer = ipcc_membuf_ble_cs_buf;
ipcc_mem_ble_tab.pevt_queue = &ipcc_mem_ble_evt_queue;
ipcc_mem_ble_tab.phci_acl_data_buffer = ipcc_membuf_ble_hci_acl_data_buf;
}
/******************************************************************************/
// Transport layer HCI interface
// The WS firmware doesn't support OCF_CB_SET_EVENT_MASK2, and fails with:
// v1.8.0.0.4 (and below): HCI_EVENT_COMMAND_COMPLETE with a non-zero status
// v1.9.0.0.4 (and above): HCI_EVENT_COMMAND_STATUS with a non-zero status
// In either case we detect the failure response and inject this response
// instead (which is HCI_EVENT_COMMAND_COMPLETE for OCF_CB_SET_EVENT_MASK2
// with status=0).
STATIC const uint8_t set_event_event_mask2_fix_payload[] = { 0x04, 0x0e, 0x04, 0x01, 0x63, 0x0c, 0x00 };
STATIC size_t tl_parse_hci_msg(const uint8_t *buf, parse_hci_info_t *parse) {
const char *info;
#if HCI_TRACE
int applied_set_event_event_mask2_fix = 0;
#endif
size_t len;
switch (buf[0]) {
case HCI_KIND_BT_ACL: {
info = "HCI_ACL";
len = 5 + buf[3] + (buf[4] << 8);
if (parse != NULL) {
parse->cb_fun(parse->cb_env, buf, len);
}
break;
}
case HCI_KIND_BT_EVENT: {
info = "HCI_EVT";
// Acknowledgment of a pending ACL request, allow another one to be sent.
if (buf[1] == HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS) {
hci_acl_cmd_pending = false;
}
len = 3 + buf[2];
if (parse != NULL) {
if (buf[1] == HCI_EVENT_COMMAND_COMPLETE && len == 7) {
uint16_t opcode = (buf[5] << 8) | buf[4];
uint8_t status = buf[6];
if (opcode == HCI_OPCODE(OGF_CTLR_BASEBAND, OCF_CB_SET_EVENT_MASK2) && status != 0) {
// For WS firmware v1.8.0.0.4 and below. Reply with the "everything OK" payload.
parse->cb_fun(parse->cb_env, set_event_event_mask2_fix_payload, sizeof(set_event_event_mask2_fix_payload));
#if HCI_TRACE
applied_set_event_event_mask2_fix = 18;
#endif
break; // Don't send the original payload.
}
if (opcode == HCI_OPCODE(OGF_CTLR_BASEBAND, OCF_CB_RESET) && status == 0) {
// Controller acknowledged reset command.
// This will trigger setting the MAC address.
parse->was_hci_reset_evt = true;
}
}
if (buf[1] == HCI_EVENT_COMMAND_STATUS && len == 7) {
uint16_t opcode = (buf[6] << 8) | buf[5];
uint8_t status = buf[3];
if (opcode == HCI_OPCODE(OGF_CTLR_BASEBAND, OCF_CB_SET_EVENT_MASK2) && status != 0) {
// For WS firmware v1.9.0.0.4 and higher. Reply with the "everything OK" payload.
parse->cb_fun(parse->cb_env, set_event_event_mask2_fix_payload, sizeof(set_event_event_mask2_fix_payload));
#if HCI_TRACE
applied_set_event_event_mask2_fix = 19;
#endif
break; // Don't send the original payload.
}
}
parse->cb_fun(parse->cb_env, buf, len);
}
break;
}
case HCI_KIND_VENDOR_RESPONSE: {
// assert(buf[1] == 0x0e);
info = "VEND_RESP";
len = 3 + buf[2]; // ???
// uint16_t cmd = buf[4] | buf[5] << 8;
// uint8_t status = buf[6];
break;
}
case HCI_KIND_VENDOR_EVENT: {
// assert(buf[1] == 0xff);
info = "VEND_EVT";
len = 3 + buf[2]; // ???
// uint16_t evt = buf[3] | buf[4] << 8;
break;
}
default:
info = "HCI_UNKNOWN";
len = 0;
break;
}
#if HCI_TRACE
printf("[% 8d] <%s(%02x", mp_hal_ticks_ms(), info, buf[0]);
for (int i = 1; i < len; ++i) {
printf(":%02x", buf[i]);
}
printf(")");
if (parse && parse->was_hci_reset_evt) {
printf(" (reset)");
}
if (applied_set_event_event_mask2_fix) {
printf(" (mask2 fix %d)", applied_set_event_event_mask2_fix);
}
printf("\n");
#else
(void)info;
#endif
return len;
}
STATIC size_t tl_process_msg(volatile tl_list_node_t *head, unsigned int ch, parse_hci_info_t *parse) {
volatile tl_list_node_t *cur = head->next;
bool added_to_free_queue = false;
size_t len = 0;
while (cur != head) {
len += tl_parse_hci_msg((uint8_t *)cur->body, parse);
volatile tl_list_node_t *next = tl_list_unlink(cur);
// If this node is allocated from the memmgr event pool, then place it into the free buffer.
if ((uint8_t *)cur >= ipcc_membuf_memmgr_evt_pool && (uint8_t *)cur < ipcc_membuf_memmgr_evt_pool + sizeof(ipcc_membuf_memmgr_evt_pool)) {
// Wait for C2 to indicate that it has finished using the free buffer,
// so that we can link the newly-freed memory in to this buffer.
// If waiting is needed then it is typically between 5 and 20 microseconds.
while (LL_C1_IPCC_IsActiveFlag_CHx(IPCC, IPCC_CH_MM)) {
}
// Place memory back in free pool.
tl_list_append(&ipcc_mem_memmgr_free_buf_queue, cur);
added_to_free_queue = true;
}
cur = next;
}
if (added_to_free_queue) {
// Notify change in free pool.
LL_C1_IPCC_SetFlag_CHx(IPCC, IPCC_CH_MM);
}
return len;
}
// Only call this when IRQs are disabled on this channel.
STATIC size_t tl_check_msg(volatile tl_list_node_t *head, unsigned int ch, parse_hci_info_t *parse) {
size_t len = 0;
if (LL_C2_IPCC_IsActiveFlag_CHx(IPCC, ch)) {
// Process new data.
len = tl_process_msg(head, ch, parse);
// Clear receive channel (allows RF core to send more data to us).
LL_C1_IPCC_ClearFlag_CHx(IPCC, ch);
if (ch == IPCC_CH_BLE) {
// Re-enable IRQs for BLE now that we've cleared the flag.
LL_C1_IPCC_EnableReceiveChannel(IPCC, IPCC_CH_BLE);
}
}
return len;
}
STATIC void tl_hci_cmd(uint8_t *cmd, unsigned int ch, uint8_t hdr, uint16_t opcode, const uint8_t *buf, size_t len) {
tl_list_node_t *n = (tl_list_node_t *)cmd;
n->next = NULL;
n->prev = NULL;
cmd[8] = hdr;
cmd[9] = opcode;
cmd[10] = opcode >> 8;
cmd[11] = len;
memcpy(&cmd[12], buf, len);
#if HCI_TRACE
printf("[% 8d] >HCI(", mp_hal_ticks_ms());
for (int i = 0; i < len + 4; ++i) {
printf(":%02x", cmd[i + 8]);
}
printf(")\n");
#endif
// Indicate that this channel is ready.
LL_C1_IPCC_SetFlag_CHx(IPCC, ch);
}
STATIC ssize_t tl_sys_wait_ack(const uint8_t *buf, mp_int_t timeout_ms) {
uint32_t t0 = mp_hal_ticks_ms();
timeout_ms = MAX(SYS_ACK_TIMEOUT_MS, timeout_ms);
// C2 will clear this bit to acknowledge the request.
while (LL_C1_IPCC_IsActiveFlag_CHx(IPCC, IPCC_CH_SYS)) {
if (mp_hal_ticks_ms() - t0 > timeout_ms) {
printf("tl_sys_wait_ack: timeout\n");
return -MP_ETIMEDOUT;
}
}
// C1-to-C2 bit cleared, so process the response (just get the length, do
// not parse any further).
return (ssize_t)tl_parse_hci_msg(buf, NULL);
}
STATIC ssize_t tl_sys_hci_cmd_resp(uint16_t opcode, const uint8_t *buf, size_t len, mp_int_t timeout_ms) {
tl_hci_cmd(ipcc_membuf_sys_cmd_buf, IPCC_CH_SYS, 0x10, opcode, buf, len);
return tl_sys_wait_ack(ipcc_membuf_sys_cmd_buf, timeout_ms);
}
STATIC int tl_ble_wait_resp(void) {
uint32_t t0 = mp_hal_ticks_ms();
while (!LL_C2_IPCC_IsActiveFlag_CHx(IPCC, IPCC_CH_BLE)) {
if (mp_hal_ticks_ms() - t0 > BLE_ACK_TIMEOUT_MS) {
printf("tl_ble_wait_resp: timeout\n");
return -MP_ETIMEDOUT;
}
}
// C2 set IPCC flag -- process the data, clear the flag, and re-enable IRQs.
tl_check_msg(&ipcc_mem_ble_evt_queue, IPCC_CH_BLE, NULL);
return 0;
}
// Synchronously send a BLE command.
STATIC void tl_ble_hci_cmd_resp(uint16_t opcode, const uint8_t *buf, size_t len) {
// Poll for completion rather than wait for IRQ->scheduler.
LL_C1_IPCC_DisableReceiveChannel(IPCC, IPCC_CH_BLE);
tl_hci_cmd(ipcc_membuf_ble_cmd_buf, IPCC_CH_BLE, HCI_KIND_BT_CMD, opcode, buf, len);
tl_ble_wait_resp();
}
/******************************************************************************/
// RF core interface
void rfcore_init(void) {
DEBUG_printf("rfcore_init\n");
// Ensure LSE is running
rtc_init_finalise();
// In case we're waking from deepsleep, enforce core synchronisation
__HAL_RCC_HSEM_CLK_ENABLE();
while (LL_HSEM_1StepLock(HSEM, CFG_HW_PWR_STANDBY_SEMID)) {
}
// Select LSE as RF wakeup source
RCC->CSR = (RCC->CSR & ~RCC_CSR_RFWKPSEL) | 1 << RCC_CSR_RFWKPSEL_Pos;
// Initialise IPCC and shared memory structures
ipcc_init(IRQ_PRI_SDIO);
// When the device is out of standby, it is required to use the EXTI mechanism to wakeup CPU2
LL_C2_EXTI_EnableEvent_32_63(LL_EXTI_LINE_41);
LL_EXTI_EnableRisingTrig_32_63(LL_EXTI_LINE_41);
LL_HSEM_ReleaseLock(HSEM, CFG_HW_PWR_STANDBY_SEMID, 0);
// Boot the second core
__SEV();
__WFE();
PWR->CR4 |= PWR_CR4_C2BOOT;
}
static const struct {
uint8_t *pBleBufferAddress; // unused
uint32_t BleBufferSize; // unused
uint16_t NumAttrRecord;
uint16_t NumAttrServ;
uint16_t AttrValueArrSize;
uint8_t NumOfLinks;
uint8_t ExtendedPacketLengthEnable;
uint8_t PrWriteListSize;
uint8_t MblockCount;
uint16_t AttMtu;
uint16_t SlaveSca;
uint8_t MasterSca;
uint8_t LsSource;
uint32_t MaxConnEventLength;
uint16_t HsStartupTime;
uint8_t ViterbiEnable;
uint8_t LlOnly;
uint8_t HwVersion;
} ble_init_params = {
0, // pBleBufferAddress
0, // BleBufferSize
MICROPY_HW_RFCORE_BLE_NUM_GATT_ATTRIBUTES,
MICROPY_HW_RFCORE_BLE_NUM_GATT_SERVICES,
MICROPY_HW_RFCORE_BLE_ATT_VALUE_ARRAY_SIZE,
MICROPY_HW_RFCORE_BLE_NUM_LINK,
MICROPY_HW_RFCORE_BLE_DATA_LENGTH_EXTENSION,
MICROPY_HW_RFCORE_BLE_PREPARE_WRITE_LIST_SIZE,
MICROPY_HW_RFCORE_BLE_MBLOCK_COUNT,
MICROPY_HW_RFCORE_BLE_MAX_ATT_MTU,
MICROPY_HW_RFCORE_BLE_SLAVE_SCA,
MICROPY_HW_RFCORE_BLE_MASTER_SCA,
MICROPY_HW_RFCORE_BLE_LSE_SOURCE,
MICROPY_HW_RFCORE_BLE_MAX_CONN_EVENT_LENGTH,
MICROPY_HW_RFCORE_BLE_HSE_STARTUP_TIME,
MICROPY_HW_RFCORE_BLE_VITERBI_MODE,
MICROPY_HW_RFCORE_BLE_LL_ONLY,
0, // HwVersion
};
void rfcore_ble_init(void) {
DEBUG_printf("rfcore_ble_init\n");
// Configure and reset the BLE controller.
if (!rfcore_ble_reset()) {
// ble init can fail if core2 has previously locked up. Reset HSI & rfcore to retry.
LL_RCC_HSI_Disable();
mp_hal_delay_ms(100);
LL_RCC_HSI_Enable();
rfcore_init();
rfcore_ble_reset();
}
// Enable PES rather than SEM7 to moderate flash access between the cores.
uint8_t buf = 0; // FLASH_ACTIVITY_CONTROL_PES
tl_sys_hci_cmd_resp(HCI_OPCODE(OGF_VENDOR, OCF_C2_SET_FLASH_ACTIVITY_CONTROL), &buf, 1, 0);
}
bool rfcore_ble_reset(void) {
DEBUG_printf("rfcore_ble_reset\n");
// Clear any outstanding messages from ipcc_init.
tl_check_msg(&ipcc_mem_sys_queue, IPCC_CH_SYS, NULL);
// Configure and reset the BLE controller.
int ret = tl_sys_hci_cmd_resp(HCI_OPCODE(OGF_VENDOR, OCF_BLE_INIT), (const uint8_t *)&ble_init_params, sizeof(ble_init_params), 500);
if (ret == -MP_ETIMEDOUT) {
return false;
}
tl_ble_hci_cmd_resp(HCI_OPCODE(0x03, 0x0003), NULL, 0);
return true;
}
void rfcore_ble_hci_cmd(size_t len, const uint8_t *src) {
DEBUG_printf("rfcore_ble_hci_cmd\n");
#if HCI_TRACE
printf("[% 8d] >HCI_CMD(%02x", mp_hal_ticks_ms(), src[0]);
for (int i = 1; i < len; ++i) {
printf(":%02x", src[i]);
}
printf(")\n");
#endif
tl_list_node_t *n;
uint32_t ch;
if (src[0] == HCI_KIND_BT_CMD) {
n = (tl_list_node_t *)&ipcc_membuf_ble_cmd_buf[0];
ch = IPCC_CH_BLE;
} else if (src[0] == HCI_KIND_BT_ACL) {
n = (tl_list_node_t *)&ipcc_membuf_ble_hci_acl_data_buf[0];
ch = IPCC_CH_HCI_ACL;
// Give the previous ACL command up to 100ms to complete.
mp_uint_t timeout_start_ticks_ms = mp_hal_ticks_ms();
while (hci_acl_cmd_pending) {
if (mp_hal_ticks_ms() - timeout_start_ticks_ms > 100) {
break;
}
#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
mp_bluetooth_nimble_hci_uart_wfi();
#endif
}
// Prevent sending another command until this one returns with HCI_EVENT_COMMAND_{COMPLETE,STATUS}.
hci_acl_cmd_pending = true;
} else {
printf("** UNEXPECTED HCI HDR: 0x%02x **\n", src[0]);
return;
}
n->next = NULL;
n->prev = NULL;
memcpy(n->body, src, len);
// IPCC indicate.
LL_C1_IPCC_SetFlag_CHx(IPCC, ch);
}
size_t rfcore_ble_check_msg(rfcore_ble_msg_callback_t cb, void *env) {
parse_hci_info_t parse = { cb, env, false };
size_t len = tl_check_msg(&ipcc_mem_ble_evt_queue, IPCC_CH_BLE, &parse);
// Intercept HCI_Reset events and reconfigure the controller following the reset
if (parse.was_hci_reset_evt) {
uint8_t buf[8];
buf[0] = 0; // config offset
buf[1] = 6; // config length
mp_hal_get_mac(MP_HAL_MAC_BDADDR, &buf[2]);
#define SWAP_UINT8(a, b) { uint8_t temp = a; a = b; b = temp; \
}
SWAP_UINT8(buf[2], buf[7]);
SWAP_UINT8(buf[3], buf[6]);
SWAP_UINT8(buf[4], buf[5]);
tl_ble_hci_cmd_resp(HCI_OPCODE(OGF_VENDOR, OCF_WRITE_CONFIG), buf, 8); // set BDADDR
}
return len;
}
// "level" is 0x00-0x1f, ranging from -40 dBm to +6 dBm (not linear).
void rfcore_ble_set_txpower(uint8_t level) {
uint8_t buf[2] = { 0x00, level };
tl_ble_hci_cmd_resp(HCI_OPCODE(OGF_VENDOR, OCF_SET_TX_POWER), buf, 2);
}
void rfcore_start_flash_erase(void) {
uint8_t buf = 1; // ERASE_ACTIVITY_ON
tl_sys_hci_cmd_resp(HCI_OPCODE(OGF_VENDOR, OCF_C2_FLASH_ERASE_ACTIVITY), &buf, 1, 0);
}
void rfcore_end_flash_erase(void) {
uint8_t buf = 0; // ERASE_ACTIVITY_OFF
tl_sys_hci_cmd_resp(HCI_OPCODE(OGF_VENDOR, OCF_C2_FLASH_ERASE_ACTIVITY), &buf, 1, 0);
}
/******************************************************************************/
// IPCC IRQ Handlers
void IPCC_C1_TX_IRQHandler(void) {
IRQ_ENTER(IPCC_C1_TX_IRQn);
IRQ_EXIT(IPCC_C1_TX_IRQn);
}
void IPCC_C1_RX_IRQHandler(void) {
IRQ_ENTER(IPCC_C1_RX_IRQn);
DEBUG_printf("IPCC_C1_RX_IRQHandler\n");
if (LL_C2_IPCC_IsActiveFlag_CHx(IPCC, IPCC_CH_BLE)) {
// Disable this IRQ until the incoming data is processed (in tl_check_msg).
LL_C1_IPCC_DisableReceiveChannel(IPCC, IPCC_CH_BLE);
#if MICROPY_PY_BLUETOOTH
// Queue up the scheduler to process UART data and run events.
mp_bluetooth_hci_poll_now();
#endif
}
IRQ_EXIT(IPCC_C1_RX_IRQn);
}
/******************************************************************************/
// MicroPython bindings
STATIC mp_obj_t rfcore_status(void) {
return mp_obj_new_int_from_uint(ipcc_mem_dev_info_tab.fus.table_state);
}
MP_DEFINE_CONST_FUN_OBJ_0(rfcore_status_obj, rfcore_status);
STATIC mp_obj_t get_version_tuple(uint32_t data) {
mp_obj_t items[] = {
MP_OBJ_NEW_SMALL_INT(data >> 24), MP_OBJ_NEW_SMALL_INT(data >> 16 & 0xFF), MP_OBJ_NEW_SMALL_INT(data >> 8 & 0xFF), MP_OBJ_NEW_SMALL_INT(data >> 4 & 0xF), MP_OBJ_NEW_SMALL_INT(data & 0xF)
};
return mp_obj_new_tuple(5, items);
}
STATIC mp_obj_t rfcore_fw_version(mp_obj_t fw_id_in) {
if (ipcc_mem_dev_info_tab.fus.table_state == MAGIC_IPCC_MEM_INCORRECT) {
mp_raise_OSError(MP_EINVAL);
}
mp_int_t fw_id = mp_obj_get_int(fw_id_in);
bool fus_active = ipcc_mem_dev_info_tab.fus.table_state == MAGIC_FUS_ACTIVE;
uint32_t v;
if (fw_id == 0) {
// FUS
v = fus_active ? ipcc_mem_dev_info_tab.fus.fus_version : ipcc_mem_dev_info_tab.ws.fus_version;
} else {
// WS
v = fus_active ? ipcc_mem_dev_info_tab.fus.ws_version : ipcc_mem_dev_info_tab.ws.fw_version;
}
return get_version_tuple(v);
}
MP_DEFINE_CONST_FUN_OBJ_1(rfcore_fw_version_obj, rfcore_fw_version);
STATIC mp_obj_t rfcore_sys_hci(size_t n_args, const mp_obj_t *args) {
if (ipcc_mem_dev_info_tab.fus.table_state == MAGIC_IPCC_MEM_INCORRECT) {
mp_raise_OSError(MP_EINVAL);
}
mp_int_t ogf = mp_obj_get_int(args[0]);
mp_int_t ocf = mp_obj_get_int(args[1]);
mp_buffer_info_t bufinfo = {0};
mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_READ);
mp_int_t timeout_ms = 0;
if (n_args >= 4) {
timeout_ms = mp_obj_get_int(args[3]);
}
ssize_t len = tl_sys_hci_cmd_resp(HCI_OPCODE(ogf, ocf), bufinfo.buf, bufinfo.len, timeout_ms);
if (len < 0) {
mp_raise_OSError(-len);
}
return mp_obj_new_bytes(ipcc_membuf_sys_cmd_buf, len);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(rfcore_sys_hci_obj, 3, 4, rfcore_sys_hci);
#endif // defined(STM32WB)
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