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STM32 internal HSI clock self-adaptive serial port communication system

A serial communication and self-adaptive technology, applied in the direction of generating/distributing signals, instruments, electrical digital data processing, etc., can solve the problem of not guaranteeing that the HSI clock does not shift, increasing material costs and computer board layout area, and cannot be completely eradicated Problems such as communication failure, to achieve the effect of solving communication failure, saving material costs, and great compatibility

Active Publication Date: 2020-05-26
XIAN CHINASTAR M&C
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Problems solved by technology

Although this also improves the success rate of communication between ARM and NB, it still cannot guarantee that the HSI clock does not shift when the ambient temperature changes, and cannot completely eradicate the problem of communication failure, and increases the cost of materials and the layout area of ​​the computer board

Method used

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  • STM32 internal HSI clock self-adaptive serial port communication system
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  • STM32 internal HSI clock self-adaptive serial port communication system

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Embodiment Construction

[0036] The following is attached figure 1 , figure 2 as well as image 3 The technical solution of the present invention is further described.

[0037] A STM32 internal HSI clock adaptive serial port communication system, such as figure 1 As shown, it includes clock configuration module, analysis module, ARM and NB module communication module, clock self-adaptation module, E2PROM and peripheral modules.

[0038] Such as figure 1 ,Such as figure 2 as well as image 3 As shown, the clock configuration module initializes the program, and the program initialization value clock configuration module adapts a typical value for the HSI clock. The typical value is 16, which is an intermediate value between 0-32 (excluding 32). Typical values ​​are stored in E2PROM.

[0039] The clock configuration module reads the typical value saved in E2PROM. The clock configuration module reads the typical value saved in E2PROM. The clock configuration module uses typical values ​​to modi...

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Abstract

The invention discloses an STM32 internal HSI clock self-adaptive serial port communication system. The system comprises a clock configuration module, an analysis module, an ARM and NB module communication module, a clock self-adaptive module, an E2PROM and a peripheral module. By calling the program of the clock self-adaptive module, the problem of communication failure caused by temperature change is thoroughly solved without increasing hardware cost.

Description

technical field [0001] The invention relates to the technical field of the internal clock frequency of ARM using an internal crystal oscillator, in particular to an STM32 internal HSI clock self-adaptive serial port communication system. Background technique [0002] The Internet of Everything is a new theme in the current industrial development. The STM32L0XX ARM (that is, the microprocessor) launched by STMicroelectronics has been widely used in the Internet of Things industry because of its low power consumption and high performance. At the same time, it is also widely used in the Internet of Things industry. Our company (Xi'an Zhongxing Measurement and Control Co., Ltd.) is one of the NB-IoT series (hereinafter referred to as NB) modules launched by Shanghai Quectel. [0003] When using the STM32L0XX ARM chip, because the external crystal oscillator consumes a lot of power, the higher the crystal oscillator frequency, the greater the power consumption. To reduce power co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/04G06F13/38G06F13/42
CPCG06F1/04G06F13/385G06F13/4291G06F2213/0002
Inventor 白小龙邢靖虹
Owner XIAN CHINASTAR M&C
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