BSL 00000251

MP Type	I2C DO External interrupt
OS Type	Arduino & Free-RTOS
I2C	register1 read register2 read/write
DO	register1,register2 clear control
External interrupt	IC output ( MPU sleep deprivation )
Diagnostics	SP – CP register2 write check , register1 clear check MP I2C ACK/NACK

Specification document of OSS-EC 00000251

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BSL-00000251

Software Specifications

In this section, we will use the OSS-EC I2C component ( ABLIC S-35710M ) as an example.

Intended use scenarios

Shifts to MPU Sleep mode when condition A is satisfied, generates an INT interrupt after the wakeup time elapses, and releases MPU Sleep mode.

summary

The OSS-EC architecture for the S-35710M is shown in ( fig.1), in accordance with the hardware architecture.
The State flow is shown in ( fig.2 ). Condition A is satisfied if Wakeup_req = iSet.
The API is shown in ( fig.3 ).
The Sequence of PCMP for Command is shown in ( fig.4 ).
Data table
File

Blue label characters are data related to user define.

Data table

#define Label	Value	Data contents
iPCMP_cyc	1000U//portTICK_PERIOD_MS	PCMP Function call cycle 1000[ms]
iErr_times	3U	Number of error judgments 3[times]
iCom_retry_num	3U	I2C communication retry 3[times]
iWakeUp_time	10U	Wakeup time 10[s]
iDia_WakeUp_time	2U	Diagnostic Wakeup time 2[s]
iI2C_SDA	20*	I2C SDA Pin
iI2C_SCL	21*	I2C SCL Pin
iDO_RST	5*	/RST
iINT_wakeup	2*	INT
iI2C_frequency	400000	Frequency 400[kHz]

* sample test board : Arduino MEGA2560[R3]