CN101242447B - An intelligent mobile phone based on dual-CPU architecture and communication control method - Google Patents

Abstract

The invention relates to a double CPU architecture intelligent mobile phone and the communication control method thereof. According to the technology, AP and CP are in sleep state in most time during stand-by process; when a user only operates AP, CP is also in sleep state; when the user needs to operate CP, AP actively wakeups CP to transmit data; when URC is reported to CP, AP is waken up to transmit data; when accidental restart occurs during CP operation, AP is firstly waken up, then a 100 to 200ms fall edge interrupt is generated at ION pin to notify AP of reinitializing CP and entering MUX mode. According to the invention, not only stable communication is realized, but also the power consumption is reduced to minimum.

Description

A kind of intelligent mobile phone based on dual-CPU architecture and communication control method thereof

Technical field

The present invention relates to a kind of intelligent mobile phone based on dual-CPU architecture and communicating control method thereof, relate in particular to the mutual arouse machine processed between two CPU of two CPU field of mobile phones.

Background technology

Smart mobile phone, promptly Smartphone also can be described as multimedia handset.Most of smart mobile phones all can move popular operating system, as Symbian, WindowsMobile, the operating system that Palm and Linux etc. are powerful, but system task burdensome, so present most smart mobile phone adopts application processor (Application Processor, abbreviation AP)+baseband processor (Cooperate Processor, abbreviation CP) system architecture, application processor is exclusively used in the operation system and handles the multimedia application of high load capacity, the communication module at baseband processor place is finished the function mutual with wireless network, as makes a phone call, send short messages, functions such as online.This framework can the diversified characteristics of the present network formats of fine adaptation, because only need change the mobile phone that just can make another standard to module, hold the major part work of having been done at AP before having kept; Also can make dual-mode handset under to the less modification of former framework.So adopt the based on dual-CPU architecture highly versatile, and be convenient to realize, but the communication mode between AP and the module becomes an important problem, at first need to guarantee the reliable transmission of interface data, secondly, interface should not be too complicated, the difficulty that the complex interface design can increase software cost and integrate debugging.

Summary of the invention

The object of the present invention is to provide a kind of intelligent mobile phone based on dual-CPU architecture and communication control method thereof, it comprises switching on and shutting down, the sleep controlling mechanism of application processor to baseband processor, the mutual arouse machine processed between the two and the notification mechanisms of module abnormal restarting etc., promptly realized stable communication between the two, made the power consumption of mobile phone drop to minimum again.

For achieving the above object, technical scheme of the present invention is:

A kind of intelligent mobile phone based on dual-CPU architecture, it comprises application processor AP and baseband processor CP, it is characterized in that: the DTR end of this AP connects the DSR end of CP, the WAKEUP end of this AP connects the IOW end of CP, the CP_STATUS of this AP connects the ION end of CP, the RXD of this AP holds with TXD and RXD that the TXD end is connected CP respectively, and the RTS of this AP holds with CTS and RTS that the CTS end is connected CP respectively, and the POWER of this AP holds IOP and the IOR end that is connected CP respectively with RST; In these ports:

RXD, TXD are the data port of universal asynchronous reception/dispensing device (UniversalAsynchronous Receiver/Transmitter, abbreviation UART) serial ports of AP and CP, are used to carry out the full duplex transmission of data;

RTS, CTS are the flow control signal of serial ports, are used for high speed data transfers;

DTR is a delivery outlet, shows whether data terminal is ready to condition line, and AP sleeps by this end control CP and wakes up;

CP_STATUS is the input port, for high, has a trailing edge level when starting unusually when CP normally moves;

POWER is a delivery outlet, the switching on and shutting down of control CP;

RST is a delivery outlet, and control CP's restarts;

IOW is a delivery outlet, shows the state of CP, and sleep or operate as normal are used to wake up AP;

ION is a delivery outlet, shows whether operate as normal of CP, has 100ms during abnormal restarting to the 200ms low level;

IOP and IOR are the input ports, are switching on and shutting down and the Restart Signal receiving terminal of CP.

The control of AP end GPIO pin is driven by operating system and realizes that still concrete method call is finished by upper layer application, and the mechanism that provides promptly is provided, and uses implementation strategy.The realization of whole proposal needs CP end software to cooperate.

A kind of communication control method of intelligent mobile phone based on dual-CPU architecture uses aforesaid smart mobile phone to realize, concrete implementation is:

When AP received a complete command response at every turn, whether the AT command queue that needs to detect all passages was empty; If be empty, just exporting DTR is high level, and CP receives in this and have no progeny, and time-delay 100ms goes into the sleep state to 200ms is laggard;

When CP needs initiatively reporting information (Unsolicited Result Code, abbreviation URC) when reporting AP, at first can export high level by IOW and wake AP in the sleep up, the rearmounted DTR of AP operate as normal is that low level shows that AP has been ready to receive data, the dateout of having no progeny during CP receives;

When the user need operate CP, it was that low level is waken dormant CP up that AP at first exports DTR, the recovery operate as normal of having no progeny during CP receives, and output IOW high level shows that CP has been ready to receive data, the transmission data of having no progeny during AP receives;

When CP self was restarted, at first the rising edge by the IOW pin interrupted waking up AP, then can tell AP to the low level of 200ms at ION output 100ms, and the CP abnormal restarting need reinitialize.

The communication control method of described intelligent mobile phone based on dual-CPU architecture is characterized in that: during handset starting, trigger the CP operation by AP by the POWER end, stopping CP also is by this end;

When CP was unusual, AP was initiatively restarted CP by the RST end.

The communication control method of described intelligent mobile phone based on dual-CPU architecture is characterized in that: the concrete steps of this AP control CP sleep are,

After step 1:AP receives the response of an order at every turn, need whether the command queue of all passages of detection is empty, if be empty, output DTR is high;

Having no progeny during step 2:CP DSR pin is received starts a 100ms timer, and timer is gone into sleep pattern to laggard;

Step 3:CP enters sleep pattern, and IOW is set is low.

The communication control method of described intelligent mobile phone based on dual-CPU architecture is characterized in that: the concrete steps that this CP wakes AP up are,

Step 1:CP has URC to report, initialization UART;

It is high level that step 2:CP is provided with IOW, triggers AP and interrupts;

Step 3:AP WAKEUP pin receives that rising edge interrupts, if AP this moment sleeps then cuts

It is low changing to normal mode of operation and DTR is set, and shows that AP has been ready to receive data; If this moment operate as normal then DTR only is set is low;

It is low that step 4:CP detects DSR, then sends data by UART.

The communication control method of described intelligent mobile phone based on dual-CPU architecture is characterized in that: the concrete steps that this AP wakes CP up are,

It is low that step 1:AP is provided with DTR, triggers CP and interrupts;

Step 2:CP enters normal mode of operation and handles DSR from sleep pattern and interrupts, and opens UART, IOW is set for high, shows to be ready to receive data;

Step 3:AP WAKEUP pin receives that the rising edge of IOW interrupts, and sends data by UART.

The communication control method of described intelligent mobile phone based on dual-CPU architecture is characterized in that: this CP abnormal restarting notifies the concrete steps of AP to be,

Step 1: when the inner collapse of CP, restart, can interrupt waking up AP by the rising edge of IOW pin at initial phase because the effect of house dog is understood self;

Step 2: then can tell AP to the low level of 200ms at ION output 100ms, the module abnormal restarting need reinitialize;

Step 3:AP receives that the trailing edge of ION pin interrupts, and AP reinitializes CP, makes it enter normal mode of operation.

Mentality of designing of the present invention is: owing to application processor and baseband processor in the original mobile phone are worked simultaneously, so smart mobile phone power consumption unavoidably can be bigger.For reducing the smart mobile phone power consumption as far as possible, in most cases AP and CP should be in resting state to mobile phone in the standby process.In the time of user operation A P, CP still can be in sleep state, and when the user need operate CP, AP can initiatively wake CP up, finishes the transmission of data then; Give the correct time when CP has on the URC, can wake AP up, finish the transmission of data then; When the phenomenon that CP may meet accident and restart in the course of the work, at first wake AP up and produce one 100 trailing edge interruption at the ION pin then to 200ms, notice AP reinitializes CP and enters multiplex adapter (Multeplexer, abbreviation MUX) pattern.

By said structure, the present invention mainly has following advantage:

Adopt less interface between AP and the CP, realize between the two stabilized communication and the economize on electricity requirement of portable terminal.

Description of drawings

Fig. 1 is a system construction drawing of the present invention.

Fig. 2 is the pin level view when CP enters sleep pattern in the inventive method.

Fig. 3 is the pin level view that CP wakes AP up in the inventive method.

Fig. 4 is the pin level view that AP wakes CP up in the inventive method.

Fig. 5 is the pin output level view during CP abnormal restarting in the inventive method.

Embodiment

See also Fig. 1, the invention discloses a kind of intelligent mobile phone based on dual-CPU architecture, it comprises application processor AP and baseband processor CP, it is characterized in that: the DTR end of this AP connects the DSR end of CP, the IOW end of the WAKEUP end connection CP of this AP, the CP_STATUS of this AP connects the ION end of CP, and the RXD of this AP holds with TXD and RXD that the TXD end is connected CP respectively, the RTS of this AP holds with CTS and RTS that the CTS end is connected CP respectively, and the POWER of this AP holds with IOP and IOR that the RST end is connected CP respectively; In these ports:

RXD, TXD are the data port of the UART serial ports of AP and CP, are used to carry out the full duplex transmission of data;

RTS, CTS are the flow control signal of serial ports, are used for high speed data transfers;

DTR is a delivery outlet, shows whether data terminal is ready to condition line, and AP sleeps by this end control CP and wakes up;

CP_STATUS is the input port, for high, has a trailing edge level when starting unusually when CP normally moves;

POWER is a delivery outlet, the switching on and shutting down of control CP;

RST is a delivery outlet, and control CP's restarts;

IOW is a delivery outlet, shows the state of CP, and sleep or operate as normal are used to wake up AP;

ION is a delivery outlet, shows whether operate as normal of CP, has 100ms during abnormal restarting to the 200ms low level;

IOP and IOR are the input ports, are switching on and shutting down and the Restart Signal receiving terminal of CP.

Above-mentioned AP and CP can adopt the 5209 EDGE modules of Samsung s3c2242 and NXP to cooperate respectively.

The communication control method flow process of using the smart mobile phone of above-mentioned framework is to join with CP end communication module software by the operating system driving of AP end to implement, and concrete method call is to be finished by upper layer application; Details are as follows:

As Fig. 2 is the pin level state of CP when entering sleep pattern, when AP receives a complete command response at every turn, need whether the AT command queue of all passages of detection is empty, if be empty, just exporting DTR is high level, CP receives in this and has no progeny, and time-delay 100ms goes into the sleep state to 200ms is laggard, delays time and considers that the conflict of some incidents causes loss of data when main.

As Fig. 3 is the pin level state that CP wakes AP up, when CP needs URC and reports AP, at first can export high level by IOW and wake AP in the sleep up, the rearmounted DTR of AP operate as normal is that low level shows that AP has been ready to receive data, the dateout of having no progeny during CP receives.

As Fig. 4 is AP pin level state when waking CP up, and when the user need operate CP, it was that low level is waken dormant CP up that AP at first exports DTR, the recovery operate as normal of having no progeny during CP receives, output IOW high level shows that CP has been ready to receive data, the transmission data of having no progeny during AP receives.

Fig. 5 draws the pin level state when being the CP abnormal restarting, when the inner collapse of CP, restart because the effect of house dog is understood self, at first the rising edge by the IOW pin interrupts waking up AP, then can tell AP to the low level of 200ms at ION output 100ms, the module abnormal restarting need reinitialize.

More specifically:

(1) AP switching on and shutting down or restart CP:

Trigger the CP operation by AP by pin POWER during handset starting, stopping CP also is by this pin; AP was initiatively restarted CP by the RST pin when CP was unusual.

(2) AP control CP sleep:

After step 1:AP receives the response of an order at every turn, need whether the command queue of all passages of detection is empty, if be empty, output DTR is high;

Having no progeny during step 2:CP DSR pin is received starts a 100ms timer, and timer is gone into sleep pattern to laggard;

Step 3:CP enters sleep pattern, and IOW is set is low.

(3) CP wakes AP up:

Step 1:CP has URC to report, initialization UART;

It is high level that step 2:CP is provided with IOW, triggers AP and interrupts;

Step 3:AP WAKEUP pin receives that rising edge interrupts, and is low if AP this moment sleeps then switches to normal mode of operation and DTR is set, and shows that AP has been ready to receive data; If this moment operate as normal then DTR only is set is low;

It is low that step 4:CP detects DSR, then sends data by UART.

(4) AP wakes CP up:

It is low that step 1:AP is provided with DTR, triggers CP and interrupts;

Step 2:CP enters normal mode of operation and handles DSR from sleep pattern and interrupts, and opens UART, IOW is set for high, shows to be ready to receive data;

Step 3:AP WAKEUP pin receives that the rising edge of IOW interrupts, and sends data by UART;

(5) CP abnormal restarting notice AP

Step 1: when the inner collapse of CP, restart, can interrupt waking up AP by the rising edge of IOW pin at initial phase because the effect of house dog is understood self;

Step 2: then can tell AP to the low level of 200ms at ION output 100ms, the module abnormal restarting need reinitialize;

Step 3:AP receives that the trailing edge of ION pin interrupts, and AP reinitializes CP, makes it enter normal mode of operation.

Being preferred embodiment of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.

Claims (7)

1. intelligent mobile phone based on dual-CPU architecture, it comprises application processor AP and baseband processor CP, it is characterized in that: the DTR end of this AP connects the DSR end of CP, the WAKEUP end of this AP connects the IOW end of CP, the CP_STATUS of this AP connects the ION end of CP, the RXD of this AP holds with TXD and RXD that the TXD end is connected CP respectively, and the RTS of this AP holds with CTS and RTS that the CTS end is connected CP respectively, and the POWER of this AP holds IOP and the IOR end that is connected CP respectively with RST; In these ports:

RXD, TXD are the data port of the UART serial ports of AP and CP, are used to carry out the full duplex transmission of data;

RTS, CTS are the flow control signal of serial ports, are used for high speed data transfers;

DTR is a delivery outlet, shows whether data terminal is ready to condition line, and AP sleeps by this end control CP and wakes up;

CP_STATUS is the input port, for high, has a trailing edge level when starting unusually when CP normally moves;

POWER is a delivery outlet, the switching on and shutting down of control CP;

RST is a delivery outlet, and control CP's restarts;

IOW is a delivery outlet, shows the state of CP, and sleep or operate as normal are used to wake up AP;

ION is a delivery outlet, shows whether operate as normal of CP, has 100ms during abnormal restarting to the 200ms low level;

IOP and IOR are the input ports, are switching on and shutting down and the Restart Signal receiving terminal of CP.

2. the communication control method of an intelligent mobile phone based on dual-CPU architecture uses smart mobile phone as claimed in claim 1 to realize, it is characterized in that: adopt the mode of interface line to realize the requirement that communication stable between AP and the CP and communication terminal economize on electricity;

When AP received a complete command response at every turn, whether the AT command queue that needs to detect all passages was empty; If be empty, just exporting DTR is high level, and CP receives in this and have no progeny, and time-delay 100ms goes into the sleep state to 200ms is laggard;

When CP needs URC and reports AP, at first can export high level and wake AP in the sleep up by IOW, the rearmounted DTR of AP operate as normal is that low level shows that AP has been ready to receive data, the dateout of having no progeny during CP receives;

When the user need operate CP, it was that low level is waken dormant CP up that AP at first exports DTR, the recovery operate as normal of having no progeny during CP receives, and output IOW high level shows that CP has been ready to receive data, the transmission data of having no progeny during AP receives;

When CP self was restarted, at first the rising edge by the IOW pin interrupted waking up AP, then can tell AP to the low level of 200ms at ION output 100ms, and the CP abnormal restarting need reinitialize.

3. the communication control method of intelligent mobile phone based on dual-CPU architecture according to claim 2 is characterized in that: during handset starting, trigger the CP operation by AP by the POWER end, stopping CP also is by this end; When CP was unusual, AP was initiatively restarted CP by the RST end.

4. the communication control method of intelligent mobile phone based on dual-CPU architecture according to claim 2 is characterized in that: the concrete steps of this AP control CP sleep are,

After step 1:AP receives the response of an order at every turn, need whether the command queue of all passages of detection is empty, if be empty, output DTR is high;

Having no progeny during step 2:CP DSR pin is received starts a 100ms to the 200ms timer, and timer is gone into sleep pattern to laggard;

Step 3:CP enters sleep pattern, and IOW is set is low.

5. the communication control method of intelligent mobile phone based on dual-CPU architecture according to claim 2 is characterized in that: the concrete steps that this CP wakes AP up are,

Step 1:CP has URC to report, initialization UART;

It is high level that step 2:CP is provided with IOW, triggers AP and interrupts;

Step 3:AP WAKEUP pin receives that rising edge interrupts, and is low if AP this moment sleeps then switches to normal mode of operation and DTR is set, and shows that AP has been ready to receive data; If this moment operate as normal then DTR only is set is low;

It is low that step 4:CP detects DSR, then sends data by UART.

6. the communication control method of intelligent mobile phone based on dual-CPU architecture according to claim 2 is characterized in that: the concrete steps that this AP wakes CP up are,

It is low that step 1:AP is provided with DTR, triggers CP and interrupts;

Step 2:CP enters normal mode of operation and handles DSR from sleep pattern and interrupts, and opens UART, IOW is set for high, shows to be ready to receive data;

Step 3:AP WAKEUP pin receives that the rising edge of IOW interrupts, and sends data by UART.

7. the communication control method of intelligent mobile phone based on dual-CPU architecture according to claim 2 is characterized in that: the concrete steps of this CP abnormal restarting notice AP are,

Step 1: when the inner collapse of CP, restart, can interrupt waking up AP by the rising edge of IOW pin at initial phase because the effect of house dog is understood self;

Step 2: then can tell AP to the low level of 200ms at ION output 100ms, the module abnormal restarting need reinitialize;

Step 3:AP receives that the trailing edge of ION pin interrupts, and AP reinitializes CP, makes it enter normal mode of operation.

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