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The drvlib_app.dll contains two set of functions to control the pins of the SODIMM-module.
Functions which use the processor GPIO-number (GPIO_xxx) and functions which use the SODIMMM-pin-number (SPin_xxx).
The SPin_xxx-functions currently are not implemented on mature Trizeps-modules ( Trizeps I..VI).
The drvlib_app.dll contains function to control GPIO's.
GPIO = General Purpose Input Output.
Many pins of the Trizeps-module are GPIO's with multiple functionality; i.e. they may be configured as UART or LCD-interface pins etc.. The most simple function is to use these pins as input or output. If you want to know how to use a pin as interrupt-source see usinginterruptstrizeps4.
Usage of pins is made easy with the Keith & Koep drvlib_app.dll:
#include "windows.h" #define CPLUSPLUS 1 #include "drvlib_app.h" int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) { PGIO_REGS ptr; unsigned long arg_l = 0; BOOL state; arg_l=_wtol(lpCmdLine); ptr = GPIO_AllocSpace(); state = GPIO_Get_Pin( ptr, (unsigned char)arg_l); GPIO_Init_Pin(ptr, (unsigned char)arg_l, TRUE, !state); Sleep(3000); GPIO_Set_Pin( ptr, (unsigned char) arg_l, state); GPIO_FreeSpace(); return 0; }
This is what the sample does
Embedded Visual C++ Workspace for above example:
Application to set/get GPIO-level:
Usage: gpio <gpio-number> Read GPIO-pin. gpio <gpio-number> <level> Set GPIO-pin. You might need to configure a pin as output with the below line first. gpio <gpio-number> <IsOutput> <level> Configure pin as input or output.
To ease the use of the CPLD'pins of the Trizeps VI ( see Trizeps6 CPLD), they are assigned to a GPIO-number. This can be used in all GPIO_xxx() functions.
SODIMM-Pin | Description | GPIO-number |
---|---|---|
104 | CF_IOIS16 | 124 |
98 | CF_REG | 125 |
100 | CPLD_C02 | 126 |
69 | CPLD_C00 | 127 |
106 | CPLD_CS4 | 128 |
93 | RDnWR | 130 |