ardupilot/libraries/AP_HAL_AVR/examples/UtilityStringTest/UtilityStringTest.cpp
Caio Marcelo de Oliveira Filho 2e464a53c2 AP_HAL: make code not depend on concrete HAL implementations
The switching between different AP_HAL was happening by giving different
definitions of AP_HAL_BOARD_DRIVER, and the programs would use it to
instantiate.

A program or library code would have to explicitly include (and depend)
on the concrete implementation of the HAL, even when using it only via
interface.

The proposed change move this dependency to be link time. There is a
AP_HAL::get_HAL() function that is used by the client code. Each
implementation of HAL provides its own definition of this function,
returning the appropriate concrete instance.

Since this replaces the job of AP_HAL_BOARD_DRIVER, the definition was
removed.

The static variables for PX4 and VRBRAIN were named differently to avoid
shadowing the extern symbol 'hal'.
2015-10-21 09:16:07 +11:00

57 lines
1.2 KiB
C++

// -*- Mode: C++; c-basic-offset: 8; indent-tabs-mode: nil -*-
#include <string.h>
#include <AP_Common/AP_Common.h>
#include <AP_Math/AP_Math.h>
#include <AP_Param/AP_Param.h>
#include <StorageManager/StorageManager.h>
#include <AP_Progmem/AP_Progmem.h>
#include <AP_HAL/AP_HAL.h>
#include <AP_HAL_AVR/AP_HAL_AVR.h>
const AP_HAL::HAL& hal = AP_HAL::get_HAL();
void test_snprintf_P() {
char test[40];
memset(test,0,40);
hal.util->snprintf_P(test, 40, PSTR("hello %d from prog %f %S\r\n"),
10, 1.2345, PSTR("progmem"));
hal.console->write((const uint8_t*)test, strlen(test));
}
void test_snprintf() {
char test[40];
memset(test,0,40);
hal.util->snprintf(test, 40, "hello %d world %f %s\r\n",
20, 2.3456, "sarg");
hal.console->write((const uint8_t*)test, strlen(test));
}
void setup(void)
{
//
// HAL will start serial port at 115200.
//
//
// Test printing things
//
hal.console->println("Utility String Library Test");
hal.console->println("Test snprintf:");
test_snprintf();
hal.console->println("Test snprintf_P:");
test_snprintf_P();
hal.console->println("done");
}
void loop(void) { }
AP_HAL_MAIN();