Bascom-AVR has a couple of 1-Wire statements available. Many times readers call me about 1-Wire statements. Also, many times during my Bascom seminar lectures, similar questions about 1-Wire statements, like 1wiresearch, 1wirecount, 1wirenext come up. Because I have never studied these statements, I have always replied that “I have never used these statements”. One recent hot summer allowed me to rectify the situation. So, here we go: in this chapter you will read all about 1-Wire statements.

Those of us who are involved in electronics generally want to measure analogue values such as voltage, current, resistance and other electronics parameters. When microcontrollers firstly appeared, they did not have A/D (analogue to digital) converters built-in, so engineers had to figure out that problem. Today, we are lucky: most AVR microcontrollers contain a 10-bit A/D converter, only a few do not. However they usually have at least a built-in comparator which can also be handy for making an A/D conversion.

The abbreviation GPS is known to virtually all of us. Amongst those who have an electronics background, it’s been known for many years. Within the general public it’s only been common knowledge for the last 10 years due to the existence of low-cost GPS devices and smart phones with GPS built in. In this chapter, I will introduce to you two GPS modules that are representative of the GPS market. Also, I’ll show you some Bascom examples and other interesting programs. GPS modules came to my attention a few years ago, when our company purchased a few GPS01 modules from HopeRF [1]. A few weeks later, we purchased another GPS module, the FGPMMOPA6B by Global Top [2]. They differ one from each other by the chipset that is used. The GPS01 is based on the Skytraq Venus6 chipset while the FGPMMOPA6B is based upon the Mediatek MT3329 chipset.