MicroPython function to display variable size big text on a screen

big_text.py

from machine import Pin, SPI, WDT
import gc9a01
import framebuf, array
from micropython import const

buffer = bytearray(240*240*2)

MAXSCREEN_X = const(240)

@micropython.viper
def big_text(s,x1:int,y1:int,h_size:int,w_size:int,c:int,screen):
    screen_addr = ptr16(screen)
    s_width = int(len(s))*8
    big_text = bytearray(s_width*8*2)
    text_fb = framebuf.FrameBuffer(big_text,s_width,8,framebuf.RGB565)
    text_fb.text(s,0,0,c)
    text_addr=ptr16(big_text)
    offset = y1*MAXSCREEN_X+x1
    for y in range(8):
        for x in range(s_width):
            color=text_addr[y*s_width+x]
            for ly in range(h_size):
                for lx in range(w_size):
                    screen_addr[(ly+h_size*y)*MAXSCREEN_X+(w_size*x)+lx+offset]=color
                    
                    
spi = SPI(1, baudrate=80_000_000, sck=Pin(10), mosi=Pin(11))
tft = gc9a01.GC9A01(
    spi,
    240,
    240,
    reset=Pin(12, Pin.OUT),
    cs=Pin(9, Pin.OUT),
    dc=Pin(8, Pin.OUT),
    backlight=Pin(13, Pin.OUT),
    rotation=0)
tft.init()
tft.rotation(0)
tft.fill(0)


#         text, xpos, ypos, height, width, color, screen buffer
big_text('Hello',10,50,10,4,0xff00,buffer)

tft.blit_buffer(buffer, 0, 0, 240,240)