The problem occurred when debugging EEPROM operation on stm8s003. I captured IIC communication data from the logic analyzer and saw that both reading and writing were normal. Under normal circumstances, a successful operation would directly return 0x00; but this time it always returned 0x37. Single-step tracing showed that the return was indeed 0, but after assigning the return value to a variable, it became 0x37. This driver has been used before without any problems, but I don't know why it's broken this time.
The IIC driver is in an independent C file, and the call is in another file, which is referenced through the extern declaration in the header file. After cross-comparison with the previous program, it was found that the function declaration in IIC.h was commented out, which is equivalent to calling it directly without declaration. Finally, after removing the comment, it returned to normal.
Previous article：The problem of inaccurate time when using the STM8S timer for the first time
Next article：The same STM8 project generates inconsistent HEX checksums after changing the directory location
Recommended ReadingLatest update time:2024-11-15 07:25
Methods and precautions for using the standard firmware library of IAR for stm8
The standard library is actually quite convenient. With a template, if you change the parameters, you don't need to check the manual and redefine the register values. Part 1, introduction to the stm8 standard library. The standard library name code of stm8 is stsw-stm8069. According to this code, you can download th
[Microcontroller]
STM8S power consumption summary
STM8S103 STM8S003 Although the PA1 pin can wake up the CPU with an external interrupt, the power consumption is too large, with a current of 300uA, and it is not suitable for battery power supply. Therefore, do not use the external interrupt of PA1 to wake up the CPU. PA2 can be used, so in the sample board, I short-c
[Microcontroller]
STM8S serial port application UART2 STM8S105
//Talk less and do more. The following is the serial port sending and receiving data that I have verified to be problem-free. //Use MCU stm8s105c6 UART2 //Called during initialization: GPIO_DeInit(GPIOD); /* Configure PD5/6 */ GPIO_Init(GPIOD, GPIO_PIN_5, GPIO_MODE_IN_PU_NO_IT); //Send data
[Microcontroller]
【STM8S】 Window watchdog
The .h file is as follows: #ifndef __WWDG_H #define __WWDG_H #include "stm8s.h" void Delay(); void WWDG_Configuration(void) ; void Refresh_WWDG_Window(void); #endif The .c file is as follows: #include "wwdg.h" #include "stm8s_wwdg.h" #define CounterInit 0x7f #define window 0x77 void Delay() //
[Microcontroller]
stm8s io configuration
The io registers of stm8s include DDR, IDR, ODR, CR1, and CR2. As for the configuration of io, you can understand it by reading the table below. The commonly used ones are push-pull output, floating input, and pull-up input. The following uses the PC1 pin as an example to explain how to configure these three modes.
[Microcontroller]
Tips for STM32 MCUs: How to use IAR to develop STM32
BKP is not finished yet, why switch to RTC? Because RTC and BKP are somewhat related, it is impossible to separate them. The following is the introduction of RTC in the data sheet: Introduction to RTC The real-time clock is an independent timer. The RTC module has a set of counters that count continuously, and ca
[Power Management]
STM8S——Flash program memory and data EEPROM
1 Introduction The FLASH program memory and data EEPROM inside STM8S are controlled by a set of general registers; so we can use these general registers to program or erase the memory contents, set write protection, or configure a specific low-power mode. We can also program the option byte of the device ourselves
[Microcontroller]
FAQs about IAR Compilers
Recently, I started using IAR for AVR for a project. I used version 5.40, mainly because version 5.40 and above include aTtiny87. As for the installation files and harmony files, you can find them yourself, they are easy to find. 1. The compilation error is shown in the figure: Obviously you don't have the bit def
[Microcontroller]
- Popular Resources
- Popular amplifiers
-
IAR fully supports the new industrial-grade PX5 real-time operating system - Foundations of ARM64 Linux Debugging, Disassembling, and Reversing Analyze Code, Understand Stack Me
- ARM Cortex-M4+Wi-Fi MCU Application Guide (Embedded Technology and Application Series) (Guo Shujun)
- zephyr dev summit pres_debugging_irnas_memfault
IAR fully supports the new industrial-grade PX5 real-time operating system
Latest Microcontroller Articles
- Learn ARM development(16)There are many things to learn about ARM, and interrupts are definitely something that needs to be learned. Since the CPU introduced interrupts, it has truly entered the multi-tasking system and greatly improved work efficiency. ...
- Learn ARM development(17)Because all embedded systems use interrupts, how does my S3C44B0 interrupt the process? Then I need to understand the whole process. To understand it in depth, the best way is to write a program ...
- Learn ARM development(18)Last time, we have learned about the interrupt handling process of ARM and how to set the interrupt function. So, does it work like this? The answer is no. Because S3C44B0 has several registers that control ...
- Embedded system debugging simulation toolAfter the embedded hardware system is designed, it needs to be debugged. Whether it is hardware debugging, software debugging or program solidification, debugging simulation tools are needed. ...
- A small question that has been bothering me recently has finally been solved~~Recently, I have not been able to understand the concept of drivers very well. Sometimes I can get a feel for it by combining some USB examples written by others, but because the ARM system does not directly explain the pins like the microcontroller ...
- Learn ARM development (1)
- Learn ARM development (2)
- Learn ARM development (4)
- Learn ARM development (6)
He Limin Column
Microcontroller and Embedded Systems Bible
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
MoreSelected Circuit Diagrams
MorePopular Articles
- LED chemical incompatibility test to see which chemicals LEDs can be used with
- Application of ARM9 hardware coprocessor on WinCE embedded motherboard
- What are the key points for selecting rotor flowmeter?
- LM317 high power charger circuit
- A brief analysis of Embest's application and development of embedded medical devices
- Single-phase RC protection circuit
- stm32 PVD programmable voltage monitor
- Introduction and measurement of edge trigger and level trigger of 51 single chip microcomputer
- Improved design of Linux system software shell protection technology
- What to do if the ABB robot protection device stops
MoreDaily News
- CGD and Qorvo to jointly revolutionize motor control solutions
- CGD and Qorvo to jointly revolutionize motor control solutions
- Keysight Technologies FieldFox handheld analyzer with VDI spread spectrum module to achieve millimeter wave analysis function
- Infineon's PASCO2V15 XENSIV PAS CO2 5V Sensor Now Available at Mouser for Accurate CO2 Level Measurement
- Advanced gameplay, Harting takes your PCB board connection to a new level!
- Advanced gameplay, Harting takes your PCB board connection to a new level!
- A new chapter in Great Wall Motors R&D: solid-state battery technology leads the future
- Naxin Micro provides full-scenario GaN driver IC solutions
- Interpreting Huawei’s new solid-state battery patent, will it challenge CATL in 2030?
- Are pure electric/plug-in hybrid vehicles going crazy? A Chinese company has launched the world's first -40℃ dischargeable hybrid battery that is not afraid of cold
Guess you like
- [MPS Mall Big Offer Experience Season] Unboxing
- MSP430F5529 IO port pin interrupt study notes
- Circuit-level electrostatic protection design techniques and ESD protection methods
- [ESK32-360 Review] +TFT screen display function and expansion (3)
- Can the 7805 and 1117-5 power supplies be used within ±0.05?
- CC3200 Kit OURS-SDK-WFB_Exploration 4——FreeRTOS Run
- The microcontroller outputs PWM wave to control the load supply voltage 0-12V adjustable
- 【Insights】If you don’t plant flowers in your heart, weeds will grow
- [ESP32-Korvo Review] 1: ESP32-Korvo Audio Development Board Hardware Circuit Connection
- I would like to ask which manufacturers produce unipolar TMR tunneling effect switches. I only found MDT, and Magne does not have unipolar ones.
京公网安备 11010802033920号