
Install CubeIDE by downloading, extracting, and running the installer; configure the workspace, adjust the installation location, allow firewall access, and optionally share usage statistics.
Download the datasheet, reference manual, and user guides to read registers and configure the microcontroller peripherals. Use UART peripheral and pinout guidance to build the driver for the GSM module.
Set up the gsm module driver project in cube ide for an stm32 f4 board, creating a new workspace and importing the sdm32 f4 cmc headers and device includes.
Test the five four FIFO by loading and retrieving data, verify wrap-around, and address 8-bit data type limits; confirm TX and RX FIFOs before GSM data transmission.
Copy data from the transmit FIFO to the UART by implementing a transfer function that waits for the tx data register to be empty, then writes characters to the UART.
Build and test a push button driver for an embedded GSM system by configuring PC13 as an input, enabling GPIO clocks, and implementing a boolean get_button_state for an active-low button.
Explore the real time clock (RTC) architecture, including backup and main power domains, backup registers, alarms, wakeups, timestamp, tamper detection, and the calendar with BCD encoding.
Enable rtc alarm initialization by disabling write protection, entering initialization mode, and configuring date, time, and alarm registers via bit shifts, masks, and bcd fields, including pm vs 24-hour format.
Develops the RTC alarm initialization by masking the alarm register with mask bits to ignore the weekday, and enables the alarm in the control register.
Learn to test the RTC by reading date and time from registers, convert between BCD and binary, and handle alarm interrupts to display time on a console.
Use a push button as a hardware trigger to send an sms, configure the button state, and send a message to a designated number when pressed, illustrating a tamper-detection scenario.
Send sensor data as SMS periodically using the rtc, triggering every minute by comparing previous and current rtc minutes, with gsm initialization preceding rtc setup.
Welcome to the Embedded Systems Cellular Firmware Development(GSM) course
This course teaches you how to develop drivers and libraries for adding cellular functionality to your embedded device.
This course uses the STM32 microcontroller and the A6 GSM/GPRS chip. The A6 is a low-cost quad band GSM/GPRS chip equipped with 850/900/1800/1900MHz worldwide communication band. If you do not understand what a band means, do not worry, by the end of this course you will understand this and much more.
The drivers developed in this course will work on almost all cellular chips out there, this is because most of them use the UART for communication.
The course can be divided into three parts. The first part is theoretical. In this part we shall learn about some cellular technology concepts and the fundamentals of the GSM architecture.
In the next part of the course we shall develop bare-metal drivers for interfacing the A6 chip to the STM32 microcontroller.
After developing our drivers for connecting the A6 chip to the STM32 microcontroller we shall then go ahead and develop efficient data structures for managing communication data between the A6 chip and the STM32 microcontroller.
In the final part we shall combine the drivers and data structures developed in the previous parts to develop a library for connecting to the cellular network. We shall then go ahead to develop some real world applications.
Some Highlights :
If you want to understand the concept of a SIM card see section 2
If you want to know the difference between 1G, 2G, 3G, 4G, 5G see section 2
If you want to know the difference between GSM, LTE, WCDMA, see section 2
If you want to control hardware modules by SMS see section 10
If you want to control hardware modules by Phone Call see section 10
If you want to automatically send SMS or make a Phone Call by hardware trigger see section 10
If you want to develop a bare-metal realtime clock(RTC) driver see section 9
If you want to send sensor data by SMS triggered by an RTC alarm see section 10
If you want to send sensor data as SMS periodically with RTC see section 10
Please take a look at the full course curriculum.
REMEMBER : I have no doubt you will love this course. Also it comes with a FULL money back guarantee for 30 days! So put simply, you really have nothing to loose and everything to gain.
Sign up and let's start transmitting some packets.