Commit graph

1072 commits

Author SHA1 Message Date
He Yin Ling
e64b9ecaf4 Merge branch 'bugfix/ut_only_test_app_core_sleep_on_dual_core' into 'master'
test: only test app core sleep on dual core

See merge request !1517
2017-11-13 13:35:07 +08:00
Jiang Jiang Jian
004c391591 Merge branch 'feature/adjust_task_stack_size_according_to_nano' into 'master'
esp32/lwip: adjust task stack size according 'nano' print

See merge request !1510
2017-11-13 11:18:20 +08:00
Angus Gratton
36692dbac7 docs: Add esp_wifi_types.h items to wifi API reference
Previously only items defined esp_wifi.h in esp_wifi_crypto_types.h
were including in documentation reference.
2017-11-10 11:00:44 -08:00
He Yin Ling
be405d69d8 test: ut only test app core reset on dual core 2017-11-10 17:53:59 +08:00
Jiang Jiang Jian
b8694eeeb9 Merge branch 'bugfix/tw16339_sta_cant_connect_ap_in_channel_14' into 'master'
Bugfix/tw16339 sta cant connect ap in channel 14

See merge request !1514
2017-11-10 15:31:19 +08:00
He Yin Ling
b1d13ded1a test: only test app core sleep on dual core 2017-11-10 13:26:11 +08:00
Ivan Grokhotkov
7632c6a80c Merge branch 'test/UT_reset_check' into 'master'
Test/ut reset check

See merge request !1086
2017-11-10 11:30:46 +08:00
Ivan Grokhotkov
3eedf3ed18 Merge branch 'bugfix/to_docs_from_github' into 'master'
Documentation bugfixes from the github

See merge request !1501
2017-11-10 11:13:25 +08:00
Ivan Grokhotkov
d1f6030921 Merge branch 'bugfix/from_github' into 'master'
Bug fixes from Github

See merge request !1487
2017-11-10 11:13:04 +08:00
Liu Zhi Fu
2041ba9add esp32: fix station can't connect esp32 softap in channel 14
Channel 14 only supports HT20 while ESP32 softap channel 14 is HT40, fix it.
2017-11-10 10:55:08 +08:00
Liu Zhi Fu
710055025e esp32/lwip: adjust task stack size according 'nano' print
1. Adjust tcpip/main/event/timer task stack size according 'nano' print
2. If 'nano' print is disabled the task stack size reduces 512 bytes
2017-11-09 10:09:42 +08:00
Jiang Jiang Jian
793ea56204 Merge branch 'bugfix/fail_to_scan_all_matched_ap' into 'master'
Wifi: bugfix/fail_to_scan_all_matched_ap

See merge request !1493
2017-11-08 17:39:29 +08:00
Seppe Stas
a106dc183d Clean up documentation of esp_wifi_set_country
Signed-off-by: krzychb
2017-11-07 20:26:22 +01:00
houchenyao
f80824a2d8 test: support test for UT cases expect to reset 2017-11-07 12:19:39 +08:00
Ivan Grokhotkov
1613044aef Merge branch 'bugfix/restart_reconfigure_flash_pins' into 'master'
esp32: reconfigure SPI flash pins in esp_restart

See merge request !1492
2017-11-07 12:08:52 +08:00
Ivan Grokhotkov
a45e9c806d Merge branch 'bugfix/new_task_watchdog_API_false_trigger' into 'master'
feat/New Task Watchdog API

See merge request !1380
2017-11-07 10:43:56 +08:00
Deng Xin
092e99c05d Wifi: bugfix/fail_to_scan_all_matched_ap
fail to scan all matched ap in fast scan mode
2017-11-06 21:31:45 +08:00
Ivan Grokhotkov
5f6be9b4ce esp32: reconfigure SPI flash pins in esp_restart 2017-11-06 16:44:26 +08:00
Jiang Jiang Jian
abacf8d2a0 Merge branch 'bugfix/rtc_and_restart_fixes' into 'master'
rtc_clk and esp_restart fixes

See merge request !1458
2017-11-04 01:34:38 +08:00
Liu Zhi Fu
13621852dd esp32: add wifi lib which is compiled with psram gcc
Add psram wifi lib because it doesn't impact the WiFi throughput once the psram is not enabled in IDF menuconfig
2017-11-03 23:02:35 +08:00
Frederik Merz
20ccec1061 Disable all UART CLKs that are not console 2017-11-03 19:03:00 +08:00
jeanleflambeur
8712fd3ccf Update esp_err.h
Renamed the internal rc to __err_rc to avoid clashes with local variables.
This code would not do the expected thing with the original ESP_ERROR_CHECK macro:

esp_err_t my_func(esp_err_t x)
{
  assert(x == 23);
}

esp_err_t rc = 23; //some value that is important fo the user
ESP_ERROR_CHECK(my_func(rc));

The macro will expand to:
esp_err_t rc = (my_func(rc));

And the code will assert, as my_func will receive a random value - whatever is in the internal macro rc temp variable. This is due to the C weirdness of allowing this code:

int x = x; //x has a random value.
2017-11-03 16:45:28 +08:00
Wangjialin
cea7dfbe90 psram: improve clock signal generation, increase drive strength
Also check the chip type when initializing.
2017-11-03 16:30:10 +08:00
Ivan Grokhotkov
a02b30ccda efuse: add package definitions for PICOD2/D4 2017-11-03 15:49:10 +08:00
Ivan Grokhotkov
fb9c106bcb soc/rtc: add function to get/set VDDSDIO configuration
Also consider case of VDDSDIO force powered on in rtc_sleep.
2017-11-03 15:49:09 +08:00
Darian Leung
9d63e1da4a New Task Watchdog API (Revert of Revert)
This commit reverts the revert on the new task watchdog API. It also
fixes the following bug which caused the reversion.

- sdkconfig TASK_WDT_TIMEOUT_S has been reverted from the unit of ms back to the
unit of seconds. Fixes bug where projects using the new API without rebuilding sdkconfig
would cause the old default value of 5 to be interpreted in ms.

This commit also adds the following features to the task watchdog

- Updated idle hook registration to be compatible with dual core hooks

- Updated dual core hooks to support deregistration for cpu

- Legacy mode has been removed and esp_task_wdt_feed() is now replaced by
  esp_task_wdt_reset().  esp_task_wdt_feed() is deprecated

- Idle hooks to reset are now registered/deregistered when the idle tasks are
  added/deleted from the Task Watchdog instead of at Task Watchdog init/deinit

- Updated example
2017-11-02 16:47:51 +08:00
XiaXiaotian
27b52dfd18 fix some phy bugs
1. V366, fix a problem which initialize current can reach 800mA.

    2. V365, fix a problem for pll_cap tracking in Coexist (BT & WIFI)
       mode. The problem will make Coexist (BT & WIFI) WIFI AP mode TX
       Fail in high temperature(>70).

    3. V364, fix a bug of BT and Wifi coexist (hung in function of
       force_wifi_mode())
2017-11-02 15:53:17 +08:00
XiaXiaotian
42cefc173f refractor WiFi clock setting
Do not set WiFi clock in PHY initializing function, move it to WiFi
   start/stop function.
2017-11-02 15:24:21 +08:00
wangmengyang
bd6394db92 component/bt: clean up WIFI_CLK_EN_REG settings for Bluetooth
1. move settings of WIFI_CLK_EN_REG for bluetooth into controller init/deinit APIs
2. modify the bit mask used in phy_rf init/deinit to use WIFI-BT shared bits
2017-11-02 15:24:21 +08:00
XiaXiaotian
50b6912bf8 Increase maximum number of WiFi dynamic transmitting buffer 2017-10-31 15:18:20 +08:00
XiaXiaotian
87d3986b87 Fix the return value of esp_now_send() 2017-10-31 15:18:20 +08:00
Deng Xin
ccfbecd25f Wifi: bugfix of get wrong ap information in all channel scan
fix the issue get wrong ap information in all channel scan
2017-10-31 11:35:11 +08:00
Liu Zhi Fu
1195ced75c esp32: reduce default wifi static tx buffer
Modify the the default WiFi static tx buffer from 32 to 16
2017-10-28 12:15:40 +08:00
Ivan Grokhotkov
eb5752c635 esp_restart: fix possible race while stalling other CPU, enable WDT early
Previously esp_restart would stall the other CPU before enabling RTC_WDT.
If the other CPU was executing an s32c1i instruction, the lock signal
from CPU to the arbiter would still be held after CPU was stalled. If
the CPU running esp_restart would then try to access the same locked
memory pool, it would be stuck, because lock signal would never be
released.

With this change, esp_restart resets the other CPU before stalling it.
Ideally, we would want to reset the CPU and keep it in reset, but the
hardware doesn't have such feature for PRO_CPU (it is possible to hold
APP_CPU in reset using DPORT register). Given that ROM code will not use
s32c1i in the first few hundred cycles, doing reset and then stall seems
to be safe.

In addition to than, RTC_WDT initialization is moved to the beginning of
the function, to prevent possible lock-up if CPU stalling still has any
issue.
2017-10-26 19:53:53 +08:00
Angus Gratton
2c2e7f6303 Merge branch 'bugfix/optmize_ipv6_event' into 'master'
bugfix: add netif info in event message when got ipv6 address

See merge request !959
2017-10-23 17:00:10 +08:00
Tian Zhong Xing
55e95b04bd bugfix: add netif info in event message when got ipv6 address 2017-10-23 13:50:43 +08:00
Ivan Grokhotkov
59b7d98fec Merge branch 'feature/dfs' into 'master'
Dynamic frequency scaling

See merge request !1189
2017-10-22 12:34:11 +08:00
Ivan Grokhotkov
b6f37bda97 Merge branch 'feature/i2s_built_in_adc' into 'master'
feature(I2S-ADC): add ADC mode for I2S.

See merge request !1077
2017-10-20 15:52:56 +08:00
Ivan Grokhotkov
90bbcbcdc0 unit tests: fix warnings, build with -Werror
- libsodium: silence warnings
- unit tests: fix warnings
- spiram: fix warnings
- ringbuf test: enable by default, reduce delays
2017-10-19 21:35:23 +08:00
Ivan Grokhotkov
ae7404972c sleep: don't power down VDD_SDIO in light sleep if SPIRAM is enabled 2017-10-19 21:35:23 +08:00
Ivan Grokhotkov
d55ddfe56d update libstdc++.a built with pSRAM workaround 2017-10-19 21:35:22 +08:00
Ivan Grokhotkov
cc67500d3e unit test: adapt tests to single core configuration 2017-10-19 21:35:21 +08:00
He Yin Ling
1fc2ac8b09 unit-test: esp timer use same name as ets timer
We will use case name to select test cases in UT jobs.
Same case name is not allowed.
2017-10-19 21:35:21 +08:00
Ivan Grokhotkov
8e01b4aef8 Merge branch 'docs/esp32_hooks' into 'master'
docs/Added documentation about esp32 hooks

See merge request !1417
2017-10-19 12:32:36 +08:00
Ivan Grokhotkov
54d2dc7681 Merge branch 'bugfix/fix_some_wifi_bugs' into 'master'
esp32: fix some wifi bugs

See merge request !1414
2017-10-18 16:20:09 +08:00
Darian Leung
461f8da704 docs/Added documentation about esp32 hooks
This commit adds documentation about the esp32 Idle and Tick Hooks
2017-10-18 15:19:35 +08:00
Angus Gratton
78f70d4e79 Merge branch 'bugfix/cxx_exceptions' into 'master'
Full C++ Exception Support option (& reclaim memory when exceptions disabled)

See merge request !1353
2017-10-18 15:08:10 +08:00
Deng Xin
80b14fc77f esp32: fix some wifi bugs
1. Fix WiFi timer enable twice issue
2. Fix a softAP compatibility issue
3. Fix ebuf alloc counter issue
4. remove nvs_flash_init() in esp_wifi_init()
5. Fix scan only find few APs after set bssid
6. Fix can not connect to hidden SoftAP
7. Remove group key entry before connecting ot AP
2017-10-18 14:53:19 +08:00
Ivan Grokhotkov
fba9678c56 uart: add support for REF_TICK 2017-10-18 14:19:20 +08:00
Ivan Grokhotkov
bfeecd2b56 freertos: deprecate XT_CLOCK_FREQ
- freertos: add deprecated definition for XT_CLOCK_FREQ
- flash_ops: don't use XT_CLOCK_FREQ
- unity: don't use XT_CLOCK_FREQ
- hw_random: don't use XT_CLOCK_FREQ
- core_dump: don't use XT_CLOCK_FREQ
- app_trace: don't use XT_CLOCK_FREQ
- xtensa_init: init xt_tick_divisor
2017-10-18 14:19:19 +08:00
Ivan Grokhotkov
df3c857a30 esp32: add power management hooks for WiFi library 2017-10-18 14:19:19 +08:00
Ivan Grokhotkov
eb0c34e5c9 esp_timer: add support for frequency scaling 2017-10-18 14:19:18 +08:00
Ivan Grokhotkov
3f818f4862 pm: support for tracing using GPIOs 2017-10-18 14:19:18 +08:00
Ivan Grokhotkov
535695f0b9 freertos: add frequency switching hooks to ISR and idle task 2017-10-18 14:19:17 +08:00
Ivan Grokhotkov
42d51a4224 esp32: initialize PM at startup, add Kconfig options 2017-10-18 14:19:17 +08:00
Ivan Grokhotkov
68e1751b78 pm: initial implementation for ESP32 2017-10-18 14:19:16 +08:00
Ivan Grokhotkov
47e3c9dd4b pm: initial version of power management APIs 2017-10-18 14:19:16 +08:00
Ivan Grokhotkov
4798b7d775 unit tests: add test to dump esp_timer stats 2017-10-18 14:19:15 +08:00
Ivan Grokhotkov
3788b35f87 unit tests: more robust esp_timer test 2017-10-18 14:19:15 +08:00
Ivan Grokhotkov
37e9bc715c esp_clk.h: make public, add getters for RTC time, CPU/APB freq 2017-10-18 14:19:14 +08:00
Ivan Grokhotkov
f13623d97d make esp_timer.h public 2017-10-18 12:31:38 +08:00
Ivan Grokhotkov
566f018996 crosscore_int: add support for FREQ_SWITCH event 2017-10-18 12:31:38 +08:00
Tian Hao
09862b5918 component/esp32 : update phy & rtc
RTC V230
add BT AGC saturation protection, replace RTC V229.

PHY V362
Power up print: "phy_version: 362.0, 61e8d92, Sep 8 2017, 18:48:13"
1. esp_init_data_v3.bin
modify TX target power
modify WIFI & BT RX gain table
2. modify phy_close_rf()
3. add phy_set_most_tpw()
4. 26M crystal work OK
5. noise_check_loop ok
2017-10-17 18:02:42 +08:00
Ivan Grokhotkov
7babc74fce Merge branch 'feature/reduce_min_num_of_wifi_static_tx_buffer' into 'master'
Reduce minimum number of WiFi static tx buffer

See merge request !1398
2017-10-17 17:40:14 +08:00
Angus Gratton
9c7477ef34 cxx: Add KConfig option for C++ exceptions, disable by default
Fixes https://github.com/espressif/esp-idf/issues/1072

(Additional 20KB is still used if C++ exception support is enabled in
menuconfig.)
2017-10-17 15:29:25 +08:00
Ivan Grokhotkov
6e7dd5962b Merge branch 'bugfix/add_mutex_for_dual_core_hooks' into 'master'
freertos/Add mutex for dual core hooks

See merge request !1406
2017-10-17 14:15:09 +08:00
Ivan Grokhotkov
08d6ca4f70 Merge branch 'bugfix/ets_timer_iram' into 'master'
wifi/bt coexistence: Fix disabled cache access race when writing to flash

See merge request !1409
2017-10-17 14:12:43 +08:00
Ivan Grokhotkov
d3bb9de36a Merge branch 'feature/spiram_init_in_app' into 'master'
spiram: expose function to initialize SPI RAM cache

See merge request !1281
2017-10-17 04:56:35 +08:00
Ivan Grokhotkov
b58e19f8a2 Merge branch 'bugfix/soc_component_rodata' into 'master'
soc: place constant data from rtc_clk.c into DRAM

See merge request !1321
2017-10-17 04:54:43 +08:00
Angus Gratton
094cf4d79d wifi/bt coexistence: Fix disabled cache access race when writing to flash
Moves the ets_timer_arm() / ets_timer_disarm() code paths to RAM

Overhead is 740 bytes of IRAM, 0 bytes DRAM

(For comparison: If all of esp_timer.c is moved to RAM, overhead is 1068 bytes IRAM and 480 bytes DRAM.)
2017-10-16 19:47:33 +08:00
Jiang Jiang Jian
99f2996779 Merge branch 'bugfix/tw15595_eth_got_ip_log_error' into 'master'
esp32/tcpipadapter: correct eth ip got event info

See merge request !1388
2017-10-16 17:30:14 +08:00
Darian Leung
7584f89278 esp32/Add mutex for dual core hooks
This commit adds critical sections for the dual core hooks
2017-10-16 11:47:38 +08:00
Ivan Grokhotkov
1da3204a7c spiram: expose function to initialize SPI RAM cache
Some frameworks based on ESP-IDF need to be able to decide whether to
initialize SPI RAM after the application has started. This change splits
out part of esp_spiram_init which manipulate cache MMU into a separate
function. Applications can disable cache, call esp_spiram_init_cache,
re-enable cache, and then call esp_spiram_init.
Disabling and re-enabling the cache can be achieved using functions
provided in esp_spi_flash.h.
2017-10-16 09:15:11 +08:00
He Yin Ling
3a271a4ae7 Merge branch 'bugfix/freertos_dual_core_hooks' into 'master'
bugfix/freertos_dual_core_hooks

See merge request !1399
2017-10-14 09:41:03 +08:00
Darian Leung
95d63137d1 bugfix/freertos_dual_core_hooks
This commit fixes bugs with the dual core changes to freeRTOS tick and idle hooks.
Interrupt watchdog now registers tick hooks to both cores.
API for cross core tick and idle hook registration were also added
2017-10-13 18:27:53 +08:00
XiaXiaotian
c730f676c3 Reduce minimum number of WiFi static tx buffer
Calibrate tx power after sending five packets
2017-10-13 17:11:31 +08:00
Jiang Jiang Jian
713dee57f0 Merge branch 'feature/add_const_for_wifi_api' into 'master'
esp32: add const for some WiFi api

See merge request !1394
2017-10-13 17:08:29 +08:00
Liu Zhi Fu
e04a0d66b8 esp32/tcpipadapter: correct eth ip got event info
1. Raise SYSTEM_EVENT_ETH_GOT_IP when eth got ip
2. Add default handler for SYSTEM_EVENT_ETH_GOT_IP
3. Minor change about ethernet kconfig
2017-10-13 15:56:51 +08:00
Jiang Jiang Jian
6ff5c32ae5 Merge branch 'feature/alloc_memories_of_wifi_and_lwip_in_spiram_first' into 'master'
Allocate some memories in SPIRAM first.

See merge request !1367
2017-10-13 15:47:27 +08:00
Liu Zhi Fu
0e586a4cdf esp32: add const for some WiFi api
Add const if the pointer parameter is const
2017-10-13 15:10:34 +08:00
XiaXiaotian
5df39cd4b6 Allocate some memories in SPIRAM first.
Try to allocate some WiFi and LWIP memories in SPIRAM first. If
    failed, try to allocate in internal RAM then.
2017-10-13 10:11:24 +08:00
Jiang Jiang Jian
dbee895741 Merge branch 'bugfix/phy_init_remove_descriptions' into 'master'
phy init: remove descriptions of PHY init parameters

See merge request !1363
2017-10-12 19:00:10 +08:00
Jiang Jiang Jian
3f1198529f Merge branch 'bugfix/fail_to_connect_in_wps' into 'master'
WiFi :bug fix of fail to connect in wps

See merge request !1384
2017-10-12 17:39:29 +08:00
Angus Gratton
3a4bd7f16c Merge branch 'bugfix/wifi_tx_buffer_doc' into 'master'
wifi docs: Clarify WIFI_DYNAMIC_TX_BUFFER_NUM config item limit

See merge request !1375
2017-10-12 13:20:28 +08:00
Angus Gratton
f3681e22de wifi docs: Clarify WIFI_DYNAMIC_TX_BUFFER_NUM config item limit
Setting WIFI_DYNAMIC_TX_BUFFER_NUM to zero is not possible.

Also edit some of the related config docs a little.
2017-10-12 15:53:53 +11:00
Deng Xin
a99c89f6af bug fix of fail to connect in wps 2017-10-12 12:01:11 +08:00
Deng Xin
a05867f673 Wifi: bugfix of fail to reconnect after reboot
fix the issue fail to reconnect after reboot
2017-10-11 17:58:36 +08:00
Jiang Jiang Jian
904d6c8f2b Merge branch 'feature/scan_optimize' into 'master'
wifi: scan optimize

See merge request !1334
2017-10-10 13:39:16 +08:00
Deng Xin
d515494d1b wifi: optimize scan feature
1. add the threshold of match AP in fast scan
2. add blacklist feature
3. make sure would wrong if password didn't set
4. add scan example
2017-10-10 12:27:02 +08:00
Jiang Jiang Jian
3106ca1c1e Merge branch 'bugfix/btdm_ea_overloaded' into 'master'
component/bt: increase programming delay for event arbiter to allow for heavy workload

See merge request !1338
2017-10-10 12:26:25 +08:00
Ivan Grokhotkov
fdc24eb118 phy init: remove descriptions of PHY init parameters 2017-10-09 14:40:08 +08:00
Daniel Campora
1c046f30a6 freertos: Make the tick/idle hooks dual core compatible
The way these hooks are implemented at the moment, once you register a tick or idle task hook, it is run by both cores, leading to intermittent crashes that are difficult to explain (and debug). One solution is to register the hook with the core that is currently running, which is what this patch attempts to do.

Merges https://github.com/espressif/esp-idf/pull/781
2017-10-09 13:04:20 +11:00
wangmengyang
2797966c47 component/bt: increase programming delay for event arbiter to allow for heavy workload 2017-09-30 18:12:45 +08:00
Jeroen Domburg
b6a2bd1184 Revert "esp32: New Task Watchdog API"
This reverts commit 616baa239d.
2017-09-30 18:07:19 +08:00
Darian Leung
616baa239d esp32: New Task Watchdog API
Legacy API of task watchdog used the same function esp_task_wdt_feed() to add
and feed a task. This caused issues of implicitly adding a task to the wdt list
if the function was used in shared code.

The new API introduces init, adding, feeding, deleting, deinit functions. Tasks
must now be explicitly added to the task watchdog using their handles. Deletion
must also be explicit using task handles. This resolves the issue of implicit
task additions to the task watchdog due to shared code calling
esp_task_wdt_feed().

Task watchdog is now fully configurable at runtime by calling the init and
deinit functions.

Also added functions to get the handles of idle tasks of the other core. This
helps when adding idle tasks to the watchdog at run time.

Configuring the task watchdog using menu config is still available, however
menu config will only result in calling the init and add functions for idle
tasks shortly after the scheduler starts.

Menu config also allows for using legacy behavior, however the legacy behavior
willcall the new API functions but with slight variations to make them legacy
compatible.

Documentation and example have also been updated

gcov_rtio.c headers updated to prevent error of freertos header files being
included in the wrong order.

Resolves issue TW#13265
2017-09-29 23:10:55 +08:00
Darian Leung
ae9041ab71 esp32: Fix task watchdog timer triggering issues TW#14794
The two task watchdog timer bugs are as follows...
1) If only a single task existed on the wdt task list, and esp_task_wdt_feed()
was only called once, the watchdog triggers but fails to print task name
2) If a single task already exists on the task wdt list, and another task calls
esp_task_wdt_feed() once, the watchdog fails to trigger

Problem stemmed from the loop responsible for resetting the watchdog timer
having incorrect loop parameters. The loop failed to traverse the full length
of the task wdt list
2017-09-29 22:12:58 +08:00
Jeroen Domburg
740f8a79f0 Add logic to make external RAM usable with malloc() 2017-09-28 17:17:50 +08:00
Ivan Grokhotkov
73e8afc5b9 soc: place constant data from rtc_clk.c into DRAM
In release mode, switches in rtc_clk_bbpll_set would be converted to
jump tables. These tables would be placed into .rodata, which caused
rtc_clk_cpu_freq_set to be unusable while cache is disabled. This
manifested itself in crashes when exiting from light sleep:

https://esp32.com/posting.php?mode=reply&f=13&t=3089#pr14590
2017-09-26 17:08:49 +08:00
Ivan Grokhotkov
7d436c9a44 Merge branch 'bugfix/timestamp' into 'master'
fix(global, log): correct the CCOUNT register when switching CPU clock during boot 2nd and before scheduler.

See merge request !1296
2017-09-26 16:15:42 +08:00
michael
9d9e771933 fix(global, log): fix esp_log(_early)_timestamp readings after startup by correct the CCOUNT register when switching CPU clock.
TW#13332, Closes #700
2017-09-26 15:18:17 +08:00