As we have seen in the last STM32 Blue Pill UART tutorial, In the polling method, microcontroller will do nothing except polling the state of the RX pin. Therefore, it is kind of a waste of microcontroller processing time and resources. On the contrary, by using an interrupt-driven approac...
9.1.2 Hierarchical Interrupt Structure Interrupt modules are best used in a hierarchical fashion, with modules at the block level and at the chip level. Each block has its own instantiation of an interrupt module. This allows the device driver for that block to have exclusive access to the reg...
In C programming, you can use the intrinsic functions provided in Cortex Microcontroller Software Interface Standard (CMSIS) compliant device driver libraries or provided in the compiler to set and clear PRIMASK: void __enable_irq(); // Clear PRIMASK void __disable_irq(); // Set PRIMASK void...
function to determine how long to wait before turning on the LED. This works great if you are doing very little else. If we want to do other things while we wait to turn on the LED or possibly go into a low power mode, we can utilize the timer-counter overflow feature of the ...
What I noticed is for some reason if the unaligned store is through a packed structure, the optimization does not take place. pyelftools Pyelftools is a pure Python package capable of parsing ELF and DWARF information. If you are looking to perform your own analysis on ELF files, I highly...
elf32-littlearm-fdpic elf32-bigarm elf32-bigarm-fdpic elf32-little elf32-big srec symbolsrec verilog tekhex binary ihex plugin However, Binutils can be compiled to support multiple architectures / targets from the same binary! If you are switching between architectures frequently, you can com...
The generation of an interrupt can occur by hardware or software, as illustrated in Figure 2.9. If a device wishes to interrupt the processor, it informs the programmable interrupt controller (PIC). The PIC then decides whether it should interrupt the processor. If there is a processor interrupt...
In this project, we will examine the structure of a custom CMSIS-Driver based on the hardware timer outlined above. Go to the exercises in thepack installerand copy Exercise 12.4. Open timer_LPC17xx.c and go to the end of the file. ...
Reference in the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various...
10. The pre-stored vector interrupt handling system of claim 1, wherein the pre-stored vector interrupt handling system is incorporated in a microcontroller. 11. The pre-stored vector interrupt handling system of claim 1, wherein the processor is a microprocessor. ...