GPS(Global Positioning System)
The PMB 2520 Hammerhead is a IC sulution for GPS that producted by the Infineon Technologies. It allows the usage of assistance data by surpporting A-GPS standards.
The Hammerhead consists of the following modules:
The Hammerhead integrates 3 serial interfaces:
The UART in the Hammerhead is a full-duplex UART interface. It is fixed in 8N1(8 data bits, no parity, 1 stop bit) mode. On the GTA01, the host processor connect with the Hammerhead through the UART.
The Hammerhead driver software is delivered as a library. The library has two seperate interfaces for the software. One part of them provides an interface to communicate with the high level software. The other part is the HAL(Hardware Abstraction Layer), it is used to communicate with the system.
The library provides the following infomations to the high level software:
The high level software sends the following messages to the library:
The library communicates with the system at the following part:
At the GTA01, the host processor is a SC2410..
On the GTA01, the Hammerhead are configured that connected with the host processor through the UART. The UART of data output/input is connected to the UART 1 of the SC2410. The UART of the hardware flow control is connected to the UART 2 of the SC2410.