Flanterm is a fast and reasonably complete terminal emulator with support for multiple output backends. Included is a fast framebuffer backend.
To quickly set up and use a framebuffer Flanterm instance, it is possible to
use the flanterm_fb_init() function as such:
#include <flanterm/flanterm.h>
#include <flanterm/backends/fb.h>
struct flanterm_context *ft_ctx = flanterm_fb_init(
NULL,
NULL,
framebuffer_ptr, width, height, pitch,
red_mask_size, red_mask_shift,
green_mask_size, green_mask_shift,
blue_mask_size, blue_mask_shift,
NULL,
NULL, NULL,
NULL, NULL,
NULL, NULL,
NULL, 0, 0, 1,
0, 0,
0
);Where framebuffer_ptr, width, height, pitch and {red,green,blue}_mask_{size,shift}
represent the corresponding info about the framebuffer to use for this given instance.
The meaning of the other arguments can be found in backends/fb.h.
To then print to the terminal instance, simply use the flanterm_write()
function on the given instance. For example:
#include <flanterm/flanterm.h>
const char msg[] = "Hello world\n";
flanterm_write(ft_ctx, msg, sizeof(msg));