(MCU 8051) STC15W204S
0.96" OLED 128x64 SSD1306
參考資訊：
1. SSD1306.pdf
2. Adafruit_SSD1306
3. STC15F2K60S2-en.pdf
main.s
i2c_sda set 0xcc i2c_scl set 0xcd i2c_addr equ 0x78 lcd_width equ 128 lcd_height equ 64 cmd_contrast equ 0x81 cmd_disp_resume equ 0xa4 cmd_normal_disp equ 0xa6 cmd_invert_disp equ 0xa7 cmd_disp_off equ 0xae cmd_disp_on equ 0xaf cmd_disp_offset equ 0xd3 cmd_com_pins equ 0xda cmd_vcom_detect equ 0xdb cmd_clock_div equ 0xd5 cmd_pre_charge equ 0xd9 cmd_multiplex equ 0xa8 cmd_start_line equ 0x40 cmd_memory_mode equ 0x20 cmd_column_addr equ 0x21 cmd_page_addr equ 0x22 cmd_scan_dec equ 0xc8 cmd_seg_remap equ 0xa0 cmd_charge_pump equ 0x8d .org 0h jmp _start .org 100h _start: call ssd1306_init call ssd1306_set_col_addr call ssd1306_set_page_addr call i2c_start mov a, #i2c_addr call i2c_write mov a, #40h call i2c_write mov r4, #16 m0: mov r5, #64 m1: mov a, #55h call i2c_write djnz r5, m1 djnz r4, m0 call i2c_stop jmp $ delay: mov r0, #10 djnz r0, $ ret i2c_start: setb i2c_sda setb i2c_scl call delay clr i2c_sda call delay clr i2c_scl ret i2c_stop: call delay clr i2c_sda call delay setb i2c_scl call delay setb i2c_sda ret i2c_write: push 4 push 5 mov r4, #8 mov r5, a i0: mov a, r5 rlc a mov r5, a jc i1 clr i2c_sda sjmp i2 i1: setb i2c_sda i2: call delay setb i2c_scl call delay clr i2c_scl djnz r4, i0 call delay setb i2c_sda call delay setb i2c_scl call delay mov c, i2c_sda call delay clr i2c_scl pop acc mov r5, a pop acc mov r4, a ret send_cmd: push 4 mov r4, a call i2c_start mov a, #i2c_addr call i2c_write mov a, #0 call i2c_write mov a, r4 call i2c_write call i2c_stop pop acc mov r4, a ret send_data: push 4 mov r4, a call i2c_start mov a, #i2c_addr call i2c_write mov a, #40h call i2c_write mov a, r4 call i2c_write call i2c_stop pop acc mov r4, a ret ssd1306_init: mov a, #cmd_disp_off call send_cmd mov a, #cmd_clock_div call send_cmd mov a, #80h call send_cmd mov a, #cmd_multiplex call send_cmd mov a, #3fh call send_cmd mov a, #cmd_disp_offset call send_cmd mov a, #0 call send_cmd mov a, #cmd_start_line call send_cmd mov a, #cmd_charge_pump call send_cmd mov a, #14h call send_cmd mov a, #cmd_memory_mode call send_cmd mov a, #0 call send_cmd mov a, #cmd_seg_remap | 1 call send_cmd mov a, #cmd_scan_dec call send_cmd mov a, #cmd_com_pins call send_cmd mov a, #12h call send_cmd mov a, #cmd_contrast call send_cmd mov a, #0cfh call send_cmd mov a, #cmd_pre_charge call send_cmd mov a, #0f1h call send_cmd mov a, #cmd_vcom_detect call send_cmd mov a, #40h call send_cmd mov a, #cmd_disp_resume call send_cmd mov a, #cmd_normal_disp call send_cmd mov a, #cmd_disp_on call send_cmd ret ssd1306_set_col_addr: mov a, #cmd_column_addr call send_cmd mov a, #0 call send_cmd mov a, #lcd_width - 1 call send_cmd ret ssd1306_set_page_addr: mov a, #cmd_page_addr call send_cmd mov a, #0 call send_cmd mov a, #lcd_height / 8 - 1 call send_cmd ret .end
編譯程式：
$ mcu8051ide --compile main.s
燒錄程式：
$ sudo stcgal -P stc15 main.hex
完成
