Monthly Archives: January 2019

CM_ComplPro

SimPy
SimPy – Discrete event simulation for Python

Wikipedia

Stetige Gleichverteilung
Dreiecksverteilung
Exponentialverteilung
Normalverteilung
Binomialverteilung
Erwartungswert
Varianz
Polstelle

YouTube

08 Exponentialverteilungen Einführung
Die STETIGE GLEICHVERTEILUNG einfach erklärt
ERWARTUNGSWERT und VARIANZ der STETIGEN GLEICHVERTEILUNG
Erwartungswert in der Wahrscheinlichkeit, einfache Version Unterstufe | Mathe by Daniel Jung
02: Grundräume, Ereignisse, Zufallsvariablen, diskreter W-Raum
25: Wichtige stetige Verteilungen, Transformation einer Zufallsvariablen, Erwartungswert, Quantile

Woche 4

Expected Monetary Value (EMV) and Decision Trees
Drawing a Decision Tree & Expected Monetary Values
Excel Expected Monetary Value (EMV) Payoff Table
Use Expected Monetary Value (EMV) to Determine Risk Impact
EMV-Analyse
Decision-Making Tools and Expected Monetary Value (EMV) (PDF)

nRF5 SDK: SoftDevice

ARM Assembly

SVCALL(SD_BLE_ENABLE,
       uint32_t,
       sd_ble_enable(uint32_t * p_app_ram_base)
);

#define SVCALL(number, return_type, signature)          \
  static return_type signature                          \
  {                                                     \
    __asm(                                              \
        "svc %0\n"                                      \
        "bx r14" : : "I" (GCC_CAST_CPP number) : "r0"   \
    ); 

ARM GCC Inline Assembler Kochbuch
ARM GCC Inline Assembler Cookbook
GCC Extended Asm – Assembler Instructions with C Expression Operands
ARM GCC Inline Assembler Cookbook (PDF)
Writing inline assembly code

Stack Trace

sd_softdevice_enable()

components\libraries\util\app_error_weak.c
void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)

nrf_sdm.h   uint32_t     sd_softdevice_enable(&clock_lf_cfg, app_error_fault_handler)
nrf_sdh.c   ret_code_t   nrf_sdh_enable_request(void)
main.c      void         ble_stack_init(void)
main.c      int          main(void)

ble_evt_handler()

Specifying Attributes of Variables – section
Analyzing the Linker Map file with a little help from the ELF and the DWARF
github.com/govind-mukundan/MapViewer, A windows application to view and analyze information from the linker generated Map file


static nrf_sdh_ble_evt_observer_t m_ble_observer
__attribute__ ((section(".sdh_ble_observers3")))
__attribute__((used)) = {
    .handler   = ble_evt_handler,
    .p_context = NULL
}

components\libraries\experimental_section_vars\nrf_section.h
============================================================

section_name = sdh_ble_observers3
section_var  = static nrf_sdh_ble_evt_observer_t m_ble_observer

#define NRF_SECTION_ITEM_REGISTER(section_name, section_var) \
    section_var __attribute__ ((section("." STRINGIFY(section_name)))) __attribute__((used))


components\libraries\experimental_section_vars\nrf_section_iter.h
=================================================================

#define NRF_SECTION_SET_ITEM_REGISTER(_name, _priority, _var)
    NRF_SECTION_ITEM_REGISTER(CONCAT_2(_name, _priority), _var)

components\softdevice\common\nrf_sdh_ble.h
==========================================

                             _name    = m_ble_observer
                             _prio    = 3
                             _handler = ble_evt_handler,
                             _context = NULL
#define NRF_SDH_BLE_OBSERVER(_name, _prio, _handler, _context)
NRF_SECTION_SET_ITEM_REGISTER(
    sdh_ble_observers,
    _prio,
    static nrf_sdh_ble_evt_observer_t _name
) =
{
    .handler   = _handler,
    .p_context = _context
}

main.c
======

#define APP_BLE_OBSERVER_PRIO           3

// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);

on_adv_evt()

/\*\*<[a-zA-Z .\\@_]*\*/
[,]?[ ]*/\*\*<[a-zA-Z ();,.\\@_]*\*/

ble_advertising_t    p_advertising->adv_handle
ble_advertising_t    p_advertising->evt_handler
ble_advertising_t    p_advertising->error_handler

uint32_t sd_ble_gap_adv_set_configure(...)
uint32_t ble_advertising_init(...)
void     advertising_init() -> init.evt_handler = on_adv_evt
int      main(void)

static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)

typedef enum {
  BLE_ADV_EVT_IDLE
  BLE_ADV_EVT_DIRECTED_HIGH_DUTY
  BLE_ADV_EVT_DIRECTED
  BLE_ADV_EVT_FAST
  BLE_ADV_EVT_SLOW
  BLE_ADV_EVT_FAST_WHITELIST
  BLE_ADV_EVT_SLOW_WHITELIST
  BLE_ADV_EVT_WHITELIST_REQUEST
  BLE_ADV_EVT_PEER_ADDR_REQUEST
} ble_adv_evt_t;

enum BLE_GAP_EVTS {
  BLE_GAP_EVT_CONNECTED
  BLE_GAP_EVT_DISCONNECTED
  BLE_GAP_EVT_CONN_PARAM_UPDATE
  BLE_GAP_EVT_SEC_PARAMS_REQUEST
  BLE_GAP_EVT_SEC_INFO_REQUEST
  BLE_GAP_EVT_PASSKEY_DISPLAY
  BLE_GAP_EVT_KEY_PRESSED
  BLE_GAP_EVT_AUTH_KEY_REQUEST
  BLE_GAP_EVT_LESC_DHKEY_REQUEST
  BLE_GAP_EVT_AUTH_STATUS
  BLE_GAP_EVT_CONN_SEC_UPDATE
  BLE_GAP_EVT_TIMEOUT
  BLE_GAP_EVT_RSSI_CHANGED
  BLE_GAP_EVT_ADV_REPORT
  BLE_GAP_EVT_SEC_REQUEST
  BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST
  BLE_GAP_EVT_SCAN_REQ_REPORT
  BLE_GAP_EVT_PHY_UPDATE_REQUEST
  BLE_GAP_EVT_PHY_UPDATE
  BLE_GAP_EVT_DATA_LENGTH_UPDATE_REQUEST
  BLE_GAP_EVT_DATA_LENGTH_UPDATE
  BLE_GAP_EVT_QOS_CHANNEL_SURVEY_REPORT
  BLE_GAP_EVT_ADV_SET_TERMINATED
};

enum BLE_GATTC_EVTS {
  BLE_GATTC_EVT_PRIM_SRVC_DISC_RSP = BLE_GATTC_EVT_BASE
  BLE_GATTC_EVT_REL_DISC_RSP
  BLE_GATTC_EVT_CHAR_DISC_RSP
  BLE_GATTC_EVT_DESC_DISC_RSP
  BLE_GATTC_EVT_ATTR_INFO_DISC_RSP
  BLE_GATTC_EVT_CHAR_VAL_BY_UUID_READ_RSP
  BLE_GATTC_EVT_READ_RSP
  BLE_GATTC_EVT_CHAR_VALS_READ_RSP
  BLE_GATTC_EVT_WRITE_RSP
  BLE_GATTC_EVT_HVX
  BLE_GATTC_EVT_EXCHANGE_MTU_RSP
  BLE_GATTC_EVT_TIMEOUT
  BLE_GATTC_EVT_WRITE_CMD_TX_COMPLETE
};

S132

uint32_t sd_ble_enable(uint32_t * p_app_ram_base)
uint32_t sd_ble_cfg_set(uint32_t cfg_id, ble_cfg_t const * p_cfg, uint32_t app_ram_base)
uint32_t sd_ble_evt_get(uint8_t *p_dest, uint16_t *p_len)
uint32_t sd_ble_uuid_vs_add(ble_uuid128_t const *p_vs_uuid, uint8_t *p_uuid_type)
uint32_t sd_ble_uuid_vs_remove(uint8_t *p_uuid_type)
uint32_t sd_ble_uuid_decode(uint8_t uuid_le_len, uint8_t const *p_uuid_le, ble_uuid_t *p_uuid)
uint32_t sd_ble_uuid_encode(ble_uuid_t const *p_uuid, uint8_t *p_uuid_le_len, uint8_t *p_uuid_le)
uint32_t sd_ble_version_get(ble_version_t *p_version)
uint32_t sd_ble_user_mem_reply(uint16_t conn_handle, ble_user_mem_block_t const *p_block)
uint32_t sd_ble_opt_set(uint32_t opt_id, ble_opt_t const *p_opt)
uint32_t sd_ble_opt_get(uint32_t opt_id, ble_opt_t *p_opt)
uint32_t sd_ble_gap_addr_set(ble_gap_addr_t const *p_addr)
uint32_t sd_ble_gap_addr_get(ble_gap_addr_t *p_addr)
uint32_t sd_ble_gap_adv_addr_get(uint8_t adv_handle, ble_gap_addr_t *p_addr)
uint32_t sd_ble_gap_whitelist_set(ble_gap_addr_t const * const * pp_wl_addrs, uint8_t len)
uint32_t sd_ble_gap_device_identities_set(ble_gap_id_key_t const * const * pp_id_keys, ble_gap_irk_t const * const * pp_local_irks, uint8_t len)
uint32_t sd_ble_gap_privacy_set(ble_gap_privacy_params_t const *p_privacy_params)
uint32_t sd_ble_gap_privacy_get(ble_gap_privacy_params_t *p_privacy_params)
uint32_t sd_ble_gap_adv_set_configure(uint8_t *p_adv_handle, ble_gap_adv_data_t const *p_adv_data, ble_gap_adv_params_t const *p_adv_params)
uint32_t sd_ble_gap_adv_start(uint8_t adv_handle, uint8_t conn_cfg_tag)
uint32_t sd_ble_gap_adv_stop(uint8_t adv_handle)
uint32_t sd_ble_gap_conn_param_update(uint16_t conn_handle, ble_gap_conn_params_t const *p_conn_params)
uint32_t sd_ble_gap_disconnect(uint16_t conn_handle, uint8_t hci_status_code)
uint32_t sd_ble_gap_tx_power_set(uint8_t role, uint16_t handle, int8_t tx_power)
uint32_t sd_ble_gap_appearance_set(uint16_t appearance)
uint32_t sd_ble_gap_appearance_get(uint16_t *p_appearance)
uint32_t sd_ble_gap_ppcp_set(ble_gap_conn_params_t const *p_conn_params)
uint32_t sd_ble_gap_ppcp_get(ble_gap_conn_params_t *p_conn_params)
uint32_t sd_ble_gap_device_name_set(ble_gap_conn_sec_mode_t const *p_write_perm, uint8_t const *p_dev_name, uint16_t len)
uint32_t sd_ble_gap_device_name_get(uint8_t *p_dev_name, uint16_t *p_len)
uint32_t sd_ble_gap_authenticate(uint16_t conn_handle, ble_gap_sec_params_t const *p_sec_params)
uint32_t sd_ble_gap_sec_params_reply(uint16_t conn_handle, uint8_t sec_status, ble_gap_sec_params_t const *p_sec_params, ble_gap_sec_keyset_t const *p_sec_keyset)
uint32_t sd_ble_gap_auth_key_reply(uint16_t conn_handle, uint8_t key_type, uint8_t const *p_key)
uint32_t sd_ble_gap_lesc_dhkey_reply(uint16_t conn_handle, ble_gap_lesc_dhkey_t const *p_dhkey)
uint32_t sd_ble_gap_keypress_notify(uint16_t conn_handle, uint8_t kp_not)
uint32_t sd_ble_gap_lesc_oob_data_get(uint16_t conn_handle, ble_gap_lesc_p256_pk_t const *p_pk_own, ble_gap_lesc_oob_data_t *p_oobd_own)
uint32_t sd_ble_gap_lesc_oob_data_set(uint16_t conn_handle, ble_gap_lesc_oob_data_t const *p_oobd_own, ble_gap_lesc_oob_data_t const *p_oobd_peer)
uint32_t sd_ble_gap_encrypt(uint16_t conn_handle, ble_gap_master_id_t const *p_master_id, ble_gap_enc_info_t const *p_enc_info)
uint32_t sd_ble_gap_sec_info_reply(uint16_t conn_handle, ble_gap_enc_info_t const *p_enc_info, ble_gap_irk_t const *p_id_info, ble_gap_sign_info_t const *p_sign_info)
uint32_t sd_ble_gap_conn_sec_get(uint16_t conn_handle, ble_gap_conn_sec_t *p_conn_sec)
uint32_t sd_ble_gap_rssi_start(uint16_t conn_handle, uint8_t threshold_dbm, uint8_t skip_count)
uint32_t sd_ble_gap_rssi_stop(uint16_t conn_handle)
uint32_t sd_ble_gap_rssi_get(uint16_t conn_handle, int8_t *p_rssi, uint8_t *p_ch_index)
uint32_t sd_ble_gap_scan_start(ble_gap_scan_params_t const *p_scan_params, ble_data_t const * p_adv_report_buffer)
uint32_t sd_ble_gap_scan_stop(void)
uint32_t sd_ble_gap_connect(ble_gap_addr_t const *p_peer_addr, ble_gap_scan_params_t const *p_scan_params, ble_gap_conn_params_t const *p_conn_params, uint8_t conn_cfg_tag)
uint32_t sd_ble_gap_connect_cancel(void)
uint32_t sd_ble_gap_phy_update(uint16_t conn_handle, ble_gap_phys_t const *p_gap_phys)
uint32_t sd_ble_gap_data_length_update(uint16_t conn_handle, ble_gap_data_length_params_t const *p_dl_params, ble_gap_data_length_limitation_t *p_dl_limitation)
uint32_t sd_ble_gap_qos_channel_survey_start(uint32_t interval_us)
uint32_t sd_ble_gap_qos_channel_survey_stop(void)
uint32_t sd_ble_gattc_primary_services_discover(uint16_t conn_handle, uint16_t start_handle, ble_uuid_t const *p_srvc_uuid)
uint32_t sd_ble_gattc_relationships_discover(uint16_t conn_handle, ble_gattc_handle_range_t const *p_handle_range)
uint32_t sd_ble_gattc_characteristics_discover(uint16_t conn_handle, ble_gattc_handle_range_t const *p_handle_range)
uint32_t sd_ble_gattc_descriptors_discover(uint16_t conn_handle, ble_gattc_handle_range_t const *p_handle_range)
uint32_t sd_ble_gattc_char_value_by_uuid_read(uint16_t conn_handle, ble_uuid_t const *p_uuid, ble_gattc_handle_range_t const *p_handle_range)
uint32_t sd_ble_gattc_read(uint16_t conn_handle, uint16_t handle, uint16_t offset)
uint32_t sd_ble_gattc_char_values_read(uint16_t conn_handle, uint16_t const *p_handles, uint16_t handle_count)
uint32_t sd_ble_gattc_write(uint16_t conn_handle, ble_gattc_write_params_t const *p_write_params)
uint32_t sd_ble_gattc_hv_confirm(uint16_t conn_handle, uint16_t handle)
uint32_t sd_ble_gattc_attr_info_discover(uint16_t conn_handle, ble_gattc_handle_range_t const * p_handle_range)
uint32_t sd_ble_gattc_exchange_mtu_request(uint16_t conn_handle, uint16_t client_rx_mtu)
uint32_t sd_ble_gatts_service_add(uint8_t type, ble_uuid_t const *p_uuid, uint16_t *p_handle)
uint32_t sd_ble_gatts_include_add(uint16_t service_handle, uint16_t inc_srvc_handle, uint16_t *p_include_handle)
uint32_t sd_ble_gatts_characteristic_add(uint16_t service_handle, ble_gatts_char_md_t const *p_char_md, ble_gatts_attr_t const *p_attr_char_value, ble_gatts_char_handles_t *p_handles)
uint32_t sd_ble_gatts_descriptor_add(uint16_t char_handle, ble_gatts_attr_t const *p_attr, uint16_t *p_handle)
uint32_t sd_ble_gatts_value_set(uint16_t conn_handle, uint16_t handle, ble_gatts_value_t *p_value)
uint32_t sd_ble_gatts_value_get(uint16_t conn_handle, uint16_t handle, ble_gatts_value_t *p_value)
uint32_t sd_ble_gatts_hvx(uint16_t conn_handle, ble_gatts_hvx_params_t const *p_hvx_params)
uint32_t sd_ble_gatts_service_changed(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle)
uint32_t sd_ble_gatts_rw_authorize_reply(uint16_t conn_handle, ble_gatts_rw_authorize_reply_params_t const *p_rw_authorize_reply_params)
uint32_t sd_ble_gatts_sys_attr_set(uint16_t conn_handle, uint8_t const *p_sys_attr_data, uint16_t len, uint32_t flags)
uint32_t sd_ble_gatts_sys_attr_get(uint16_t conn_handle, uint8_t *p_sys_attr_data, uint16_t *p_len, uint32_t flags)
uint32_t sd_ble_gatts_initial_user_handle_get(uint16_t *p_handle)
uint32_t sd_ble_gatts_attr_get(uint16_t handle, ble_uuid_t * p_uuid, ble_gatts_attr_md_t * p_md)
uint32_t sd_ble_gatts_exchange_mtu_reply(uint16_t conn_handle, uint16_t server_rx_mtu)
uint32_t sd_ble_l2cap_ch_setup(uint16_t conn_handle, uint16_t *p_local_cid, ble_l2cap_ch_setup_params_t const *p_params)
uint32_t sd_ble_l2cap_ch_release(uint16_t conn_handle, uint16_t local_cid)
uint32_t sd_ble_l2cap_ch_rx(uint16_t conn_handle, uint16_t local_cid, ble_data_t const *p_sdu_buf)
uint32_t sd_ble_l2cap_ch_tx(uint16_t conn_handle, uint16_t local_cid, ble_data_t const *p_sdu_buf)
uint32_t sd_ble_l2cap_ch_flow_control(uint16_t conn_handle, uint16_t local_cid, uint16_t credits, uint16_t *p_credits)
uint32_t sd_mbr_command(sd_mbr_command_t* param)
uint32_t sd_softdevice_enable(nrf_clock_lf_cfg_t const * p_clock_lf_cfg, nrf_fault_handler_t fault_handler)
uint32_t sd_softdevice_disable(void)
uint32_t sd_softdevice_is_enabled(uint8_t * p_softdevice_enabled)
uint32_t sd_softdevice_vector_table_base_set(uint32_t address)
uint32_t sd_mutex_new(nrf_mutex_t * p_mutex)
uint32_t sd_mutex_acquire(nrf_mutex_t * p_mutex)
uint32_t sd_mutex_release(nrf_mutex_t * p_mutex)
uint32_t sd_rand_application_pool_capacity_get(uint8_t * p_pool_capacity)
uint32_t sd_rand_application_bytes_available_get(uint8_t * p_bytes_available)
uint32_t sd_rand_application_vector_get(uint8_t * p_buff, uint8_t length)
uint32_t sd_power_reset_reason_get(uint32_t * p_reset_reason)
uint32_t sd_power_reset_reason_clr(uint32_t reset_reason_clr_msk)
uint32_t sd_power_mode_set(uint8_t power_mode)
uint32_t sd_power_system_off(void)
uint32_t sd_power_pof_enable(uint8_t pof_enable)
uint32_t sd_power_pof_threshold_set(uint8_t threshold)
uint32_t sd_power_ram_power_set(uint8_t index, uint32_t ram_powerset)
uint32_t sd_power_ram_power_clr(uint8_t index, uint32_t ram_powerclr)
uint32_t sd_power_ram_power_get(uint8_t index, uint32_t * p_ram_power)
uint32_t sd_power_gpregret_set(uint32_t gpregret_id, uint32_t gpregret_msk)
uint32_t sd_power_gpregret_clr(uint32_t gpregret_id, uint32_t gpregret_msk)
uint32_t sd_power_gpregret_get(uint32_t gpregret_id, uint32_t *p_gpregret)
uint32_t sd_power_dcdc_mode_set(uint8_t dcdc_mode)
uint32_t sd_clock_hfclk_request(void)
uint32_t sd_clock_hfclk_release(void)
uint32_t sd_clock_hfclk_is_running(uint32_t * p_is_running)
uint32_t sd_app_evt_wait(void)
uint32_t sd_ppi_channel_enable_get(uint32_t * p_channel_enable)
uint32_t sd_ppi_channel_enable_set(uint32_t channel_enable_set_msk)
uint32_t sd_ppi_channel_enable_clr(uint32_t channel_enable_clr_msk)
uint32_t sd_ppi_channel_assign(uint8_t channel_num, const volatile void * evt_endpoint, const volatile void * task_endpoint)
uint32_t sd_ppi_group_task_enable(uint8_t group_num)
uint32_t sd_ppi_group_task_disable(uint8_t group_num)
uint32_t sd_ppi_group_assign(uint8_t group_num, uint32_t channel_msk)
uint32_t sd_ppi_group_get(uint8_t group_num, uint32_t * p_channel_msk)
uint32_t sd_radio_notification_cfg_set(uint8_t type, uint8_t distance)
uint32_t sd_ecb_block_encrypt(nrf_ecb_hal_data_t * p_ecb_data)
uint32_t sd_ecb_blocks_encrypt(uint8_t block_count, nrf_ecb_hal_data_block_t * p_data_blocks)
uint32_t sd_evt_get(uint32_t * p_evt_id)
uint32_t sd_temp_get(int32_t * p_temp)
uint32_t sd_flash_write(uint32_t * p_dst, uint32_t const * p_src, uint32_t size)
uint32_t sd_flash_page_erase(uint32_t page_number)
uint32_t sd_flash_protect(uint32_t block_cfg0, uint32_t block_cfg1, uint32_t block_cfg2, uint32_t block_cfg3)
uint32_t sd_radio_session_open(nrf_radio_signal_callback_t p_radio_signal_callback)
uint32_t sd_radio_session_close(void)
uint32_t sd_radio_request(nrf_radio_request_t const * p_request)
uint32_t sd_protected_register_write(volatile uint32_t * p_register, uint32_t value)
a
b

3D Druck/Print: STL to STEP

Convert STL to STEP

 1. New
 2. Import -> STL
3a. Workbench "Mesh Design" 
3b. Meshes menu > Analyze > Evaluate & Repair mesh
3c. Select mesh from "Evaluate & Repair" pane
3d. Go down the list, click "Analyze" and then "Repair"
    If any option makes your mesh look terrible, skip it.
4a. Workbench "Part" 
4b. Part menu > Convert to shape
4c. Part menu > Convert to solid
5. Export as STEP File "STEP with colors (*.step *.stp)"

PDF2SVG: Convert PDF to SVG

$ pdf2svg
$ pdftocairo -svg
$ inkscape -l out.svg in.pdf
$ inkscape \
  --without-gui \
  --file=input.pdf \
  --export-plain-svg=output.svg 
$ pstoedit -f plot-svg -dt -ssp eqn.ps eqn.svg

Fonts don’t match

An option seems to be to first convert the fonts to path on the pdf side with:

$ gs -o target.pdf -dNoOutputFonts -sDEVICE=pdfwrite source.pdf

Q&A

Convert PDF to SVG by command line
convert pdf to svg
PDF to SVG conversion with grouping and proper text conversion
Convert PDF to clean SVG?
pdf2svg

nRF5 SDK: Windows 10 and BLE

Windows

nRFUart Example – “Exception in StartMasterEmulator: -100”
s there a PC (win / debian) application or source for NUS?
nRF-MCP-x64
Integrated bluetooth device on windows and NUS service
BLE interface in visual basic
PC(Central) and NRF51822 (Peripheral) communication
Trouble with nRF UART in Windows

Bluetooth Client (Linux / Windows)

nRF Connect for Desktop
Qt Bluetooth
Bluetooth Low Energy Overview
Microsoft Store: Bluetooth LE Explorer

Bluetooth LE Lab

github.com/NordicSemiconductor/pc-ble-driver, Desktop library for BLE development using nRF5
github.com/NordicSemiconductor/pc-nrfutil, nrfutil python library and command line client

Hardware

nRF5284 Dongle
The nRF52840 USB Dongle Tutorial (Part 1)

Terminal (TTY), Pseudo-Terminal (PTY), Shell

Terminal A terminal was that what seemed like 30 kg piece of solid cast iron frame wrapped in cream-colour plastic case with a glass display and keyboard in front of you
Terminal Emulation
Shell A shell was a program running on the main computer interpreting your commands.
terminal, tty text input/output environment
terminal emulator, pseudo-tty
console physical terminal
shell command line interpreter
pty “pseudo terminal”
pts “pseudo terminal slave”: login device when connecting through the network or a console (e.g. ssh).
tty “teletype”: serial or console connections (text mode)

Must Read Tutorial

The TTY demystified
What Is Tty/pty/pts

Change Content on Terminal

Overwrite last line on terminal
How to change the contents of a line on the terminal as opposed to writing a new one?
How do I keep terminal line from overwriting itself?

ncurses

“The curses library (ncurses) provides a terminal-independent method of controlling character screens.”
Curses programming
urwid
github.com/urwid/urwid, Console user interface library for Python

Terminal Codes

Terminal codes (ANSI/VT100) introduction

What is a Terminal/Console/Shell (StackOverFlow / StackExchange)

What is the difference between **pts** and **tty** and **:0**?
Terminal vs bash? [duplicate]
What are pseudo terminals (pty/tty)?
What do pty and tty mean?
How to get the tty in which bash is running?
What is the exact difference between a ‘terminal’, a ‘shell’, a ‘tty’ and a ‘console’?

Wikipedia

English

curses (programming library)
ncurses
Terminfo
Text-based user interface

Deutsch

ncurses
Zeichenorientierte Benutzerschnittstelle
Pseudoterminal

man

pty
tty
ttyS
ttytype
terminfo, terminal capability data base
getty, set terminal mode
agetty, alternative Linux getty