static int yas_init(void) { uint8_t id; if (module.initialized) return YAS_ERROR_INITIALIZE; module.cbk.usleep(YAS_STARTUP_TIME); if (module.cbk.device_open(YAS_TYPE_ACC) < 0) return YAS_ERROR_DEVICE_COMMUNICATION; if (yas_read_reg(YAS_BGW_CHIPID, &id) < 0) { module.cbk.device_close(YAS_TYPE_ACC); return YAS_ERROR_DEVICE_COMMUNICATION; } if (id != YAS_BGW_CHIPID_VAL) { module.cbk.device_close(YAS_TYPE_ACC); return YAS_ERROR_CHIP_ID; } module.enable = 0; module.delay = YAS_DEFAULT_SENSOR_DELAY; module.position = YAS_DEFAULT_POSITION; yas_set_sd(module.delay); yas_power_down(); module.cbk.device_close(YAS_TYPE_ACC); module.initialized = 1; return YAS_NO_ERROR; }
static int yas_set_delay(int delay) { if (!module.initialized) return YAS_ERROR_INITIALIZE; if (delay < 0) return YAS_ERROR_ARG; module.delay = delay; yas_set_sd(delay); if (!module.enable) return YAS_NO_ERROR; return yas_power_up(); }
static int yas_set_delay(int delay) { if (!module.initialized) return YAS_ERROR_INITIALIZE; if (delay < 0) return YAS_ERROR_ARG; module.delay = delay; yas_set_sd(delay); if (!module.enable) return YAS_NO_ERROR; if (yas_write_reg(YAS_PMU_LPW, module.lpw) < 0) return YAS_ERROR_DEVICE_COMMUNICATION; return YAS_NO_ERROR; }