ardupilot/libraries/AP_FlashIface/examples/jedec_test/jedec_test.cpp

#include <AP_HAL/AP_HAL.h>

#if CONFIG_HAL_BOARD == HAL_BOARD_LINUX

const AP_HAL::HAL& hal = AP_HAL::get_HAL();
void setup() { }

void loop()
{
    // the library simply panics if a JEDEC device can't be found.  We
    // can't really recover from that.
    hal.console->printf("No JEDEC on linux\n");
    hal.scheduler->delay(1000);
}

#else

#include <GCS_MAVLink/GCS_Dummy.h>
#include <AP_SerialManager/AP_SerialManager.h>
#include <AP_BoardConfig/AP_BoardConfig.h>
#include <AP_FlashIface/AP_FlashIface.h>
#include <stdio.h>

AP_FlashIface_JEDEC jedec_dev;
const AP_HAL::HAL& hal = AP_HAL::get_HAL();

void setup();
void loop();

GCS_Dummy _gcs;


#ifdef HAL_BOOTLOADER_BUILD
#define DELAY_MILLIS(x)         do { chThdSleepMilliseconds(x); } while(0)
#define DELAY_MICROS(x)         do { chThdSleepMicroseconds(x); } while(0)
#else
#define DELAY_MILLIS(x)         do { hal.scheduler->delay(x); } while(0)
#define DELAY_MICROS(x)         do { hal.scheduler->delay_microseconds(x); } while(0)
#endif

const AP_Param::GroupInfo GCS_MAVLINK_Parameters::var_info[] = {
        AP_GROUPEND
};

static AP_SerialManager serial_manager;
static AP_BoardConfig board_config;

static UNUSED_FUNCTION void test_page_program()
{
    uint8_t *data = new uint8_t[jedec_dev.get_page_size()];
    if (data == nullptr) {
        hal.console->printf("Failed to allocate data for program");
    }
    uint8_t *rdata = new uint8_t[jedec_dev.get_page_size()];
    if (rdata == nullptr) {
        hal.console->printf("Failed to allocate data for read");
    }

    // fill program data with its own address
    for (uint32_t i = 0; i < jedec_dev.get_page_size(); i++) {
        data[i] = i;
    }
    hal.console->printf("Writing Page #1\n");
    uint32_t delay_us, timeout_us;
    uint64_t start_time_us = AP_HAL::micros64();
    if (!jedec_dev.start_program_page(0, data, delay_us, timeout_us)) {
        hal.console->printf("Page write command failed\n");
        return;
    }
    while (true) {
        DELAY_MICROS(delay_us);
        if (AP_HAL::micros64() > (start_time_us+delay_us)) {
            if (!jedec_dev.is_device_busy()) {
                hal.console->printf("Page Program Successful, elapsed %ld us\n", (unsigned long)(AP_HAL::micros64() - start_time_us));
                break;
            } else {
                hal.console->printf("Typical page program time reached, Still Busy?!\n");
            }
        }
        if (AP_HAL::micros64() > (start_time_us+timeout_us)) {
            hal.console->printf("Page Program Timed out, elapsed %lld us\n", (unsigned long long)(AP_HAL::micros64() - start_time_us));
            return;
        }
    }
    if (!jedec_dev.read(0, rdata, jedec_dev.get_page_size())) {
        hal.console->printf("Failed to read Flash page\n");
    } else {
        if (memcmp(data, rdata, jedec_dev.get_page_size()) != 0) {
            hal.console->printf("Program Data Mismatch!\n");
        } else {
            hal.console->printf("Program Data Verified Good!\n");
        }
    }

    // Now test XIP mode here as well
    uint8_t *chip_data = nullptr;
    if (!jedec_dev.start_xip_mode((void**)&chip_data)) {
        hal.console->printf("Failed to setup XIP mode\n");
    }
    if (chip_data == nullptr) {
        hal.console->printf("Invalid address!\n");
    }
    // Here comes the future!
    if (memcmp(data, chip_data, jedec_dev.get_page_size()) != 0) {
        hal.console->printf("Program Data Mismatch in XIP mode!\n");
    } else {
        hal.console->printf("Program Data Verified Good in XIP mode!\n");
    }
    jedec_dev.stop_xip_mode();
}

static UNUSED_FUNCTION void test_sector_erase()
{
    uint32_t delay_ms, timeout_ms;
    if (!jedec_dev.start_sector_erase(0, delay_ms, timeout_ms)) { // erase first sector
        hal.console->printf("Sector erase command failed\n");
        return;
    }
    uint32_t erase_start = AP_HAL::millis();
    uint32_t next_check_ms = 0;
    hal.console->printf("Erasing Sector #1 ");
    while (true) {
        if (AP_HAL::millis() > next_check_ms) {
            hal.console->printf("\n");
            if (!jedec_dev.is_device_busy()) {
                if (next_check_ms == 0) {
                    hal.console->printf("Sector Erase happened too fast\n");
                    return;
                }
                hal.console->printf("Sector Erase Successful, elapsed %ld ms\n", (unsigned long)(AP_HAL::millis() - erase_start));
                break;
            } else {
                hal.console->printf("Still busy erasing, elapsed %ld ms\n", (unsigned long)(AP_HAL::millis() - erase_start));
            }
            if ((AP_HAL::millis() - erase_start) > timeout_ms) {
                hal.console->printf("Sector Erase Timed Out, elapsed %ld ms\n", (unsigned long)(AP_HAL::millis() - erase_start));
                return;
            }
            next_check_ms = erase_start+delay_ms;
        }
        DELAY_MILLIS((delay_ms/100) + 10);
        hal.console->printf("*");
    }
    if (!jedec_dev.verify_sector_erase(0)) {
        hal.console->printf("Erase Verification Failed!\n");
    } else {
        hal.console->printf("Erase Verification Successful!\n");
    }
}

static UNUSED_FUNCTION void test_mass_erase()
{
    uint32_t delay_ms, timeout_ms;
    if (!jedec_dev.start_mass_erase(delay_ms, timeout_ms)) {
        hal.console->printf("Mass erase command failed\n");
        return;
    }
    uint32_t erase_start = AP_HAL::millis();
    uint32_t next_check_ms = 0;
    hal.console->printf("Mass Erasing ");
    while (true) {
        if (AP_HAL::millis() > next_check_ms) {
            hal.console->printf("\n");
            if (!jedec_dev.is_device_busy()) {
                if (next_check_ms == 0) {
                    hal.console->printf("Sector Erase happened too fast\n");
                    return;
                }
                hal.console->printf("Mass Erase Successful, elapsed %ld ms\n",(unsigned long)(AP_HAL::millis() - erase_start));
                return;
            } else {
                hal.console->printf("Still busy erasing, elapsed %ld ms\n", (unsigned long)(AP_HAL::millis() - erase_start));
            }
            if ((AP_HAL::millis() - erase_start) > timeout_ms) {
                hal.console->printf("Mass Erase Timed Out, elapsed %ld ms\n", (unsigned long)(AP_HAL::millis() - erase_start));
                return;
            }
            next_check_ms = erase_start+delay_ms;
        }
        DELAY_MILLIS(delay_ms/100);
        hal.console->printf("*");
    }
}

void setup()
{
    board_config.init();
    serial_manager.init();
}

void loop()
{
    // Start on user input
    hal.console->printf("\n\n******************Starting Test********************\n");
    jedec_dev.init();
    test_sector_erase();
    test_page_program();
    // test_mass_erase();
    hal.scheduler->delay(1000);
}

#endif

AP_HAL_MAIN();