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Untested: Saving/Loading mechanism for rv-asm
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@eric15342335
eric15342335 committed Aug 27, 2024
1 parent 36c8080 commit 5274c15
Showing 1 changed file with 132 additions and 6 deletions.
138 changes: 132 additions & 6 deletions save-rvasm/save-rvasm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ void display_all_registers(rv * cpu);

// rv16 bit
#define size_of_one_saveprogram (num_of_instructions * sizeof(rv_u16))

#define size_of_one_saveprogram_in_page (size_of_one_saveprogram / page_size)
#define page_size 64
// range of byte that stores status of page[x]
#define init_status_addr_begin 0
Expand All @@ -44,22 +44,35 @@ void display_all_registers(rv * cpu);

#define delay 1000
#define matrix_hori 16
#define program_store_page_no

/*
Given:
#define paint_page_no (8 * sizeof_paint_data_aspage)
#define paint_page_no_max (8 * sizeof_paint_data_aspage)
It is recommended to separate paint storage and
program storage to different pages with gap.
*/
#define program_store_page_no ((8+64) * size_of_one_saveprogram_in_page)
#define program_store_page_no_max ((8+64+8) * size_of_one_saveprogram_in_page)

void rv_asm_routine(void);
rv_res bus_cb(void * user, rv_u32 addr, rv_u8 * data, rv_u32 is_store, rv_u32 width);
void display_all_registers(rv * cpu);
void init_storage(void);
void reset_storage(void);
uint8_t is_storage_initialized(void);
uint8_t is_page_used(uint16_t page_no);

void choose_save_program_page(void);
void choose_load_program_page(void);
void led_display_program_page_status(void);
void save_program(uint16_t program_no, rv_u16 * program);
void load_program(uint16_t program_no, rv_u16 * program);
void save_program(uint16_t program_no, rv_u16 * _program);
void load_program(uint16_t program_no, rv_u16 * _program);
void erase_all_program_saves(void);

const color_t color_savefile_exist = {.r = 0, .g = 0, .b = 100};
const color_t color_savefile_empty = {.r = 0, .g = 100, .b = 0};

// print storage data to console
void print_status_storage(void);

Expand Down Expand Up @@ -149,13 +162,119 @@ rv_u16 program[num_of_instructions] = {
0x0000,
};

void save_program(uint16_t program_no, rv_u16 * _program) {
uint16_t addr = page_status_addr_begin + program_store_page_no + program_no;
i2c_write(EEPROM_ADDR, addr, I2C_REGADDR_2B, (uint8_t *)_program, size_of_one_saveprogram);
printf("Program %d saved.\n", program_no);
}

void load_program(uint16_t program_no, rv_u16 * _program) {
uint16_t addr = page_status_addr_begin + program_store_page_no + program_no;
i2c_read(EEPROM_ADDR, addr, I2C_REGADDR_2B, (uint8_t *)_program, size_of_one_saveprogram);
printf("Program %d loaded.\n", program_no);
}

void erase_all_program_saves(void) {
for (uint16_t addr = page_status_addr_begin + program_store_page_no;
addr <= page_status_addr_begin + program_store_page_no + program_store_page_no_max;
addr++) {
i2c_write(EEPROM_ADDR, addr, I2C_REGADDR_2B, (uint8_t[]){0}, sizeof(uint8_t));
Delay_Ms(3);
}
printf("All program saves erased.\n");
}

void choose_save_program_page(void) {
led_display_program_page_status();

int8_t button = no_button_pressed;
while (1) {
button = matrix_pressed_two();
if (button != no_button_pressed) {
if (is_page_used(button * size_of_one_saveprogram_in_page + program_store_page_no +
page_status_addr_begin)) {
printf("Page %d already used\n", button);
// Overwrite save
}
printf("Selected page %d\n", button);
save_program(button, program);
printf("Program saved\n");
Delay_Ms(1000);
break;
}
Delay_Ms(200);
}
clear();
WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);

}

void choose_load_program_page(void) {
led_display_program_page_status();

int8_t button = no_button_pressed;
while (1) {
button = matrix_pressed_two();
if (button != no_button_pressed) {
if (!is_page_used(button * size_of_one_saveprogram_in_page + program_store_page_no +
page_status_addr_begin)) {
printf("Page %d is not used\n", button);
// Fill the screen with red to indicate error
fill_color((color_t){.r = 100, .g = 0, .b = 0});
WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);
Delay_Ms(1000);
led_display_program_page_status();
continue;
}
printf("Selected page %d\n", button);
load_program(button, program);
printf("Program loaded\n");
Delay_Ms(1000);
break;
}
Delay_Ms(200);
}
clear();
WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);

}

void led_display_program_page_status(void) {
clear();
for (uint16_t addr = page_status_addr_begin + program_store_page_no;
addr <= page_status_addr_begin + program_store_page_no + program_store_page_no_max;
addr+=size_of_one_saveprogram_in_page) {
if (is_page_used(addr)) {
set_color(((addr - page_status_addr_begin) / size_of_one_saveprogram_in_page),
color_savefile_exist);
}
else {
set_color((addr - page_status_addr_begin) / size_of_one_saveprogram_in_page,
color_savefile_empty);
}
}
WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);
}

#define instruction_size 16
typedef enum _which_focus {
focus_instruction_0 = 0,
focus_instruction_1 = 1,
none = 2,
} which_focus;

uint8_t is_page_used(uint16_t page_no) {
if (page_no < page_status_addr_begin || page_no > page_status_addr_end) {
printf("Invalid page number %d\n", page_no);
printf("DEBUG: %d\n", __LINE__);
while (1)
;
}
uint8_t data = 0;
i2c_read(EEPROM_ADDR, page_no, I2C_REGADDR_2B, &data, sizeof(data));
printf("Page %d is %s\n", page_no, data ? "used" : "empty");
return data;
}

int main(void) {
SystemInit();
Expand All @@ -171,11 +290,18 @@ int main(void) {

print_status_storage();

// display saved instructions

// choose which save to load

choose_load_program_page();

rv_asm_routine();

choose_save_program_page();

while (!JOY_Y_pressed()) {
Delay_Ms(100);
}
NVIC_SystemReset();
}

void instructionDisplay(int16_t index, which_focus focus) {
Expand Down

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