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Save/Loading instructions from EEPROM to run in RISC-V 16-bit instruc…
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…tion emulator
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@eric15342335
eric15342335 committed Aug 27, 2024
1 parent 5274c15 commit 239fd8f
Showing 1 changed file with 71 additions and 16 deletions.
87 changes: 71 additions & 16 deletions save-rvasm/save-rvasm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,8 @@ 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)
// the size of all program pages
#define program_store_page_no_max (64 * 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);
Expand All @@ -62,6 +63,7 @@ void init_storage(void);
void reset_storage(void);
uint8_t is_storage_initialized(void);
uint8_t is_page_used(uint16_t page_no);
void red_screen(void);

void choose_save_program_page(void);
void choose_load_program_page(void);
Expand All @@ -75,7 +77,25 @@ const color_t color_savefile_empty = {.r = 0, .g = 100, .b = 0};

// print storage data to console
void print_status_storage(void);
void set_page_status(uint16_t page_no, uint8_t status);

void set_page_status(uint16_t page_no, uint8_t status) {
if (status > 1) {
printf("Invalid status %d\n", status);
printf("DEBUG: %d\n", __LINE__);
while (1)
;
}
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)
;
}
i2c_write(EEPROM_ADDR, page_no, I2C_REGADDR_2B, &status, sizeof(status));
Delay_Ms(3);
printf("Page %d status set to %d\n", page_no, status);
}
void print_status_storage(void) {
printf("Status storage data:\n");
for (uint16_t addr = init_status_addr_begin;
Expand Down Expand Up @@ -164,20 +184,32 @@ rv_u16 program[num_of_instructions] = {

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);
if (is_page_used(addr)) {
printf("Paint %d already used, overwriting\n", addr);
Delay_Ms(500);
}
set_page_status(addr, 1);
addr *= page_size;
i2c_write_pages(EEPROM_ADDR, addr, I2C_REGADDR_2B, (uint8_t *)_program, size_of_one_saveprogram);
printf("Program %d saved at page %d\n", program_no, addr/page_size);
}

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);
if (!is_page_used(addr)) {
printf("Paint %d not used, aborting\n", addr);
return;
}
addr *= page_size;
i2c_read_pages(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++) {
addr < page_status_addr_begin + program_store_page_no + program_store_page_no_max;
addr+=size_of_one_saveprogram_in_page) {
set_page_status(addr, 0);
i2c_write(EEPROM_ADDR, addr, I2C_REGADDR_2B, (uint8_t[]){0}, sizeof(uint8_t));
Delay_Ms(3);
}
Expand Down Expand Up @@ -206,7 +238,6 @@ void choose_save_program_page(void) {
}
clear();
WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);

}

void choose_load_program_page(void) {
Expand All @@ -232,6 +263,11 @@ void choose_load_program_page(void) {
Delay_Ms(1000);
break;
}
if (JOY_Y_pressed()) {
// Use default program[]
printf("Use default program[]\n");
break;
}
Delay_Ms(200);
}
clear();
Expand All @@ -242,14 +278,16 @@ void choose_load_program_page(void) {
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 < page_status_addr_begin + program_store_page_no + program_store_page_no_max;
addr+=size_of_one_saveprogram_in_page) {
const uint16_t _led_no = ((addr - page_status_addr_begin - program_store_page_no) / size_of_one_saveprogram_in_page);
printf("LED %d: ", _led_no);
if (is_page_used(addr)) {
set_color(((addr - page_status_addr_begin) / size_of_one_saveprogram_in_page),
set_color((_led_no),
color_savefile_exist);
}
else {
set_color((addr - page_status_addr_begin) / size_of_one_saveprogram_in_page,
set_color(_led_no,
color_savefile_empty);
}
}
Expand All @@ -276,6 +314,11 @@ uint8_t is_page_used(uint16_t page_no) {
return data;
}

void red_screen(void) {
fill_color((color_t){.r = 100, .g = 0, .b = 0});
WS2812BSimpleSend(LED_PINS, (uint8_t *)led_array, NUM_LEDS * 3);
}

int main(void) {
SystemInit();
ADC_init();
Expand All @@ -289,7 +332,19 @@ int main(void) {
init_storage();

print_status_storage();

// Hold button X at startup to reset all paints
uint16_t delay_countdown = 50;
while (delay_countdown-- > 0) {
if (JOY_X_pressed()) {
erase_all_program_saves();
// Visual indication of paint save reset
red_screen();
printf("Paint reset\n");
printf("DEBUG: %d\n", __LINE__);
Delay_Ms(1000);
}
Delay_Ms(1);
}
// choose which save to load

choose_load_program_page();
Expand Down Expand Up @@ -438,15 +493,15 @@ void rv_asm_routine(void) {
Delay_Ms(100);
printf("Waiting for Y to be released\n");
}

if (JOY_X_pressed()) {
printf("Execution stopped\n");
break;
}
}

printf("Environment call @ %lX\n", cpu.csr.mepc);
display_all_registers(&cpu);

while (!JOY_Y_pressed())
;
Delay_Ms(1000);
NVIC_SystemReset();
}

rv_res bus_cb(void * user, rv_u32 addr, rv_u8 * data, rv_u32 is_store, rv_u32 width) {
Expand Down

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