I2C hang recover function added
Dependencies: UniGraphic mbed vt100
In this version, check_i2c_pins function was added in edge_mgr.cpp.
プログラムの起動時、I2Cモジュールを初期化する前に、I2Cに使用するピンの電位を確認し
もし一方でも Low に張り付いていた場合、SCL を GPIO 出力に設定して
所定回数 (I2C_UNLOCK_TRIAL_CYCLE) 反転させることにより、疑似リセットクロックを生成します。
その後は、通常の起動手順に復帰し、以降はこれまでと同様の動作をします。
af_utils/pending.cpp@2:de22987be9ba, 2018-06-18 (annotated)
- Committer:
- gaku_miyagawa
- Date:
- Mon Jun 18 02:55:38 2018 +0000
- Revision:
- 2:de22987be9ba
- Parent:
- 0:d895cd1cd897
SBU SPECIAL
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Rhyme | 0:d895cd1cd897 | 1 | #include "mbed.h" |
Rhyme | 0:d895cd1cd897 | 2 | #include "edge_time.h" |
Rhyme | 0:d895cd1cd897 | 3 | #include "pending.h" |
Rhyme | 0:d895cd1cd897 | 4 | |
Rhyme | 0:d895cd1cd897 | 5 | /* |
Rhyme | 0:d895cd1cd897 | 6 | class pending_class { |
Rhyme | 0:d895cd1cd897 | 7 | public: |
Rhyme | 0:d895cd1cd897 | 8 | pending_class() ; |
Rhyme | 0:d895cd1cd897 | 9 | ~pending_class() ; |
Rhyme | 0:d895cd1cd897 | 10 | |
Rhyme | 0:d895cd1cd897 | 11 | request_t *request ; |
Rhyme | 0:d895cd1cd897 | 12 | uint32_t submit_time ; |
Rhyme | 0:d895cd1cd897 | 13 | uint32_t replied_time ; |
Rhyme | 0:d895cd1cd897 | 14 | } ; |
Rhyme | 0:d895cd1cd897 | 15 | */ |
Rhyme | 0:d895cd1cd897 | 16 | |
Rhyme | 0:d895cd1cd897 | 17 | pending_class::pending_class() |
Rhyme | 0:d895cd1cd897 | 18 | { |
Rhyme | 0:d895cd1cd897 | 19 | submit_time = edge_time ; /* save current time */ |
Rhyme | 0:d895cd1cd897 | 20 | replied_time = 0 ; |
Rhyme | 0:d895cd1cd897 | 21 | request = new request_t ; |
Rhyme | 0:d895cd1cd897 | 22 | request->messageType = 0 ; |
Rhyme | 0:d895cd1cd897 | 23 | request->attrId = 0 ; |
Rhyme | 0:d895cd1cd897 | 24 | request->requestId = 0 ; |
Rhyme | 0:d895cd1cd897 | 25 | request->valueLen = 0 ; |
Rhyme | 0:d895cd1cd897 | 26 | request->p_value = new uint8_t[256] ; |
Rhyme | 0:d895cd1cd897 | 27 | } |
Rhyme | 0:d895cd1cd897 | 28 | |
Rhyme | 0:d895cd1cd897 | 29 | pending_class::pending_class( |
Rhyme | 0:d895cd1cd897 | 30 | uint8_t messageType, |
Rhyme | 0:d895cd1cd897 | 31 | uint16_t attrId, |
Rhyme | 0:d895cd1cd897 | 32 | uint8_t requestId, |
Rhyme | 0:d895cd1cd897 | 33 | uint16_t valueLen, |
Rhyme | 0:d895cd1cd897 | 34 | uint8_t *value |
Rhyme | 0:d895cd1cd897 | 35 | ) |
Rhyme | 0:d895cd1cd897 | 36 | { |
Rhyme | 0:d895cd1cd897 | 37 | submit_time = edge_time ; /* save current time */ |
Rhyme | 0:d895cd1cd897 | 38 | replied_time = 0 ; |
Rhyme | 0:d895cd1cd897 | 39 | request = new request_t ; |
Rhyme | 0:d895cd1cd897 | 40 | request->p_value = new uint8_t[256] ; |
Rhyme | 0:d895cd1cd897 | 41 | request->messageType = messageType ; |
Rhyme | 0:d895cd1cd897 | 42 | request->attrId = attrId ; |
Rhyme | 0:d895cd1cd897 | 43 | request->requestId = requestId ; |
Rhyme | 0:d895cd1cd897 | 44 | request->valueLen = valueLen ; |
Rhyme | 0:d895cd1cd897 | 45 | memcpy(request->p_value, value, valueLen) ; |
Rhyme | 0:d895cd1cd897 | 46 | } |
Rhyme | 0:d895cd1cd897 | 47 | |
Rhyme | 0:d895cd1cd897 | 48 | pending_class::~pending_class() |
Rhyme | 0:d895cd1cd897 | 49 | { |
Rhyme | 0:d895cd1cd897 | 50 | submit_time = 0 ; |
Rhyme | 0:d895cd1cd897 | 51 | replied_time = 0 ; |
Rhyme | 0:d895cd1cd897 | 52 | delete [] request->p_value ; |
Rhyme | 0:d895cd1cd897 | 53 | request->p_value = 0 ; |
Rhyme | 0:d895cd1cd897 | 54 | delete request ; |
Rhyme | 0:d895cd1cd897 | 55 | } |