ota-api.c

#include <stdlib.h>  //for printf
#include <stdio.h>
#include <string.h>

#include <espressif/esp_wifi.h>
#include <espressif/esp_sta.h>
#include <rboot-api.h>
#include <sysparam.h>

// the first function is the ONLY thing needed for a repo to support ota after having started with ota-boot
// in ota-boot the user gets to set the wifi and the repository details and it then installs the ota-main binary

void ota_update(void *arg) {  //arg not used
    rboot_set_temp_rom(1); //select the OTA main routine
    sdk_system_restart();  //#include <rboot-api.h>
    // there is a bug in the esp SDK such that if you do not power cycle the chip after serial flashing, restart is unreliable
}

// this function is optional to couple Homekit parameters to the sysparam variables and github parameters
unsigned int  ota_read_sysparam(char **manufacturer,char **serial,char **model,char **revision) {
    sysparam_status_t status;
    char *value;

    status = sysparam_get_string("ota_repo", &value);
    if (status == SYSPARAM_OK) {
        strchr(value,'/')[0]=0;
        *manufacturer=value;
        *model=value+strlen(value)+1;
    } else {
        *manufacturer="manuf_unknown";
        *model="model_unknown";
    }
    status = sysparam_get_string("ota_version", &value);
    if (status == SYSPARAM_OK) {
        *revision=value;
    } else *revision="0.0.0";

    uint8_t macaddr[6];
    sdk_wifi_get_macaddr(STATION_IF, macaddr);
    *serial=malloc(18);
    sprintf(*serial,"%02X:%02X:%02X:%02X:%02X:%02X",macaddr[0], macaddr[1], macaddr[2], macaddr[3], macaddr[4], macaddr[5]);

    unsigned int c_hash=0;
    char version[16];
    char* rev=version;
    char* dot;
    strncpy(rev,*revision,16);
    if ((dot=strchr(rev,'.'))) {dot[0]=0; c_hash=            atoi(rev); rev=dot+1;}
    if ((dot=strchr(rev,'.'))) {dot[0]=0; c_hash=c_hash*1000+atoi(rev); rev=dot+1;}
                                          c_hash=c_hash*1000+atoi(rev);
                                            //c_hash=c_hash*10  +configuration_variant; //possible future extension
    printf("manuf=\'%s\' serial=\'%s\' model=\'%s\' revision=\'%s\' c#=%d\n",*manufacturer,*serial,*model,*revision,c_hash);
    return c_hash;
}




#include <homekit/characteristics.h>
#include <esplibs/libmain.h>
#include <etstimer.h>

static ETSTimer update_timer;

void ota_set(homekit_value_t value) {
    if (value.format != homekit_format_bool) {
        printf("Invalid ota-value format: %d\n", value.format);
        return;
    }
    if (value.bool_value) {
        //make a distinct light pattern or other feedback to the user = call identify routine
        sdk_os_timer_setfn(&update_timer, ota_update, NULL);
        sdk_os_timer_arm(&update_timer, 500, 0); //wait 0.5 seconds to trigger the reboot so gui can update and events sent
    }
}