Merge pull request #12729 from maribu/atmega1284p

boards/atmega1284p: Add ATmega1284P as board

boards/atmega1284p/Makefile

@@ -0,0 +1,5 @@
+MODULE = board
+
+DIRS = $(RIOTBOARD)/common/atmega
+
+include $(RIOTBASE)/Makefile.base

boards/atmega1284p/Makefile.dep

@@ -0,0 +1 @@
+USEMODULE += boards_common_atmega

boards/atmega1284p/Makefile.features

@@ -0,0 +1,9 @@
+CPU = atmega1284p
+
+FEATURES_PROVIDED += periph_adc
+FEATURES_PROVIDED += periph_gpio periph_gpio_irq
+FEATURES_PROVIDED += periph_i2c
+FEATURES_PROVIDED += periph_pwm
+FEATURES_PROVIDED += periph_spi
+FEATURES_PROVIDED += periph_timer
+FEATURES_PROVIDED += periph_uart

boards/atmega1284p/Makefile.include

@@ -0,0 +1,18 @@
+# configure the terminal program
+PORT_LINUX          ?= /dev/ttyUSB0
+PORT_DARWIN         ?= $(firstword $(sort $(wildcard /dev/tty.usbmodem*)))
+BAUD                ?= 9600
+ATMEGA328P_CLOCK    ?=
+include $(RIOTMAKE)/tools/serial.inc.mk
+
+# Allow overwriting programmer via env variables without affecting other boards
+PROGRAMMER_BOARD_ATMEGA1284P ?= dragon_isp
+# ICSP programmer to use for avrdude
+PROGRAMMER ?= $(PROGRAMMER_BOARD_ATMEGA1284P)
+
+ifneq (,$(ATMEGA1284P_CLOCK))
+  CFLAGS += -DCLOCK_CORECLOCK=$(ATMEGA1284P_CLOCK)
+endif
+
+include $(RIOTMAKE)/tools/avrdude.inc.mk
+include $(RIOTBOARD)/common/atmega/Makefile.include

boards/atmega1284p/doc.txt

@@ -0,0 +1,101 @@
+/**
+@defgroup    boards_atmega1284p Standalone ATmega1284P
+@ingroup     boards
+@brief       Support for using the ATmega1284P as standalone board
+
+## Overview
+
+As the ATmega1284P can run from the internal oscillator, placing it on a
+breadboard, connecting an USB-UART adapter and power is enough to run RIOT on
+it. (An ISP programmer will be needed to program it; or to program a bootloader
+to subsequently allow programming via UART.)
+
+### MCU
+| MCU           | ATmega328p                             |
+|:------------- |:-------------------------------------- |
+| Family        | AVR/ATmega                             |
+| Vendor        | Microchip (previously Atmel)           |
+| RAM           | 16KiB                                  |
+| Flash         | 128KiB                                 |
+| EEPROM        | 4KiB                                   |
+| Frequency     | 8MHz (up to 20MHz with external clock) |
+| Timers        | 3 (2x 8bit, 1x 16bit)                  |
+| ADCs          | 6 analog input pins                    |
+| UARTs         | 1                                      |
+| SPIs          | 1                                      |
+| I2Cs          | 1 (called TWI)                         |
+| Vcc           | 2.7V - 5.5V (when clocked at 8MHz)     |
+| Datasheet     | [Official datasheet](http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42719-ATmega1284P_Datasheet.pdf) |
+
+### Pinout
+
+\htmlonly<style>div.image img[src="http://i.imgur.com/ayagBbM.png"]{width:50%;}</style>\endhtmlonly
+@image html "http://i.imgur.com/ayagBbM.png" "Pinout of the ATmega1284P"<br>
+
+The pinout image was posted in the
+[Arduino Forum](https://forum.arduino.cc/index.php?topic=322745.0).
+All credit goes to its poster, hansibull.
+
+### Clock Frequency
+
+The ATmega1284P has two internal oscillators clocked at 8MHz and at 128kHz that
+allow it to be operated without any external clock source or crystal. By default
+the fuses are configured to use the internal 8MHz oscillator, but the `CKDIV8`
+fuse is set, so that the clock is divided down to 1MHz. By disabling the
+`CKDIV8` fuse the clock will operate at 8MHz. This is highly encouraged, and
+can be done with:
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+avrdude -c dragon_isp -p m1284p -B 32 -U lfuse:w:0xc2:m
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+(Replace `dragon_isp` with the programmer you are using. The -B 32 might be
+needed for some programmers to successfully communicate with ATmegas clocked at
+less than 2MHz. It will no longer be needed after disabling `CKDIV8`.)
+
+By setting the environment variable `ATMEGA1284P_CLOCK` to a custom frequency in
+Hz (e.g. `1000000` for 1MHz), this core clock can be changed easily. Refer to
+the datasheet on how to configure the ATmega1284p to use an external crystal,
+an external clock source or the clock divider.
+
+### Relation Between Supply Voltage, Clock Frequency and Power Consumption
+
+A higher supply voltage results in a higher current drawn. Thus, lower power
+consumption can be achieved by using a lower supply voltage. However, higher
+clock frequencies require higher supply voltages for reliable operation.
+
+The lowest possible supply voltage at 8 MHz is 2.7V (with some safety margin).
+
+## Flashing the Device
+
+In order to flash the ATmega1284P without a bootloader, an ISP programmer is
+needed. Connect the programmer as follows:
+
+| ISCP pin | ATmega1284P    |
+|:-------- |:-------------- |
+| MISO     | 7/PB6/MISO     |
+| VCC      | 10/VCC         |
+| SCK      | 8/PB7/SCK      |
+| MOSI     | 6/PB5/MOSI     |
+| RESET    | 9/RESET        |
+| Ground   | 11/GND         |
+
+The tool `avrdude` needs to be installed. When using the AVR Dragon for
+programming, running
+
+    make BOARD=atmega1284p flash
+
+will take care of everything. To use the programmer `<FOOBAR>` instead, run
+
+    make BOARD=atmega1284p PROGRAMMER=<FOOBAR> flash
+
+## Serial Terminal
+
+Connect a TTL adapter with pins 14/RXD0 and 15/TXD0 an run
+
+    make BOARD=atmega1284p term
+
+Please note that the supply voltage should be compatible with the logic level of
+the TTL adapter. Usually everything between 3.3 V and 5 V should work.
+
+ */

boards/atmega1284p/include/board.h

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
+ *               2016 Laurent Navet <laurent.navet@gmail.com>
+ *               2019 Otto-von-Guericke-Universität Magdeburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_atmega1284p
+ * @{
+ *
+ * @file
+ * @brief       Board specific definitions for the standalone ATmega1284P "board"
+ *
+ * @author      Marian Buschsieweke <marian.buschsieweke@ovgu.de>
+ * @author      Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
+ * @author      Laurent Navet <laurent.navet@gmail.com>
+ */
+
+#ifndef BOARD_H
+#define BOARD_H
+
+#include "cpu.h"
+#include "periph_conf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    STDIO configuration
+ *
+ * As the CPU is too slow to handle 115200 baud, we set the default
+ * baudrate to 9600 for this board
+ * @{
+ */
+#define STDIO_UART_BAUDRATE (9600U)
+/** @} */
+
+/**
+ * @name    xtimer configuration values
+ * @{
+ */
+#define XTIMER_WIDTH                (16)
+#if CLOCK_CORECLOCK > 4000000UL
+#define XTIMER_HZ                   (CLOCK_CORECLOCK / 64)
+#else
+#define XTIMER_HZ                   (CLOCK_CORECLOCK / 8)
+#endif
+#define XTIMER_BACKOFF              (40)
+/** @} */
+
+/**
+ * @brief   Initialize board specific hardware, including clock, LEDs and std-IO
+ */
+void board_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BOARD_H */
+/** @} */

boards/atmega1284p/include/periph_conf.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 Otto-von-Guericke-Universität Magdeburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup boards_atmega1284p
+ * @{
+ *
+ * @file
+ * @brief   Peripheral MCU configuration for the ATmega1284p standalone "board"
+ *
+ * @author  Marian Buschsieweke <marian.buschsieweke@ovgu.de>
+ */
+
+#ifndef PERIPH_CONF_H
+#define PERIPH_CONF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    Clock configuration
+ * @{
+ */
+#ifndef CLOCK_CORECLOCK
+/* Using 8MHz internal oscillator as default clock source */
+#define CLOCK_CORECLOCK     (8000000UL)
+#endif
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#include "periph_conf_atmega_common.h"
+
+#endif /* PERIPH_CONF_H */

boards/common/atmega/include/periph_conf_atmega_common.h

@@ -311,7 +311,8 @@ extern "C" {
  * @name   PWM configuration
  *
  * The current implementation supports only 8-bit timers for PWM generation.
- * These timers are typically timer 0 and timer 2 in Atmega2560/1281/328p.
+ * These timers are typically timer 0 and timer 2 for
+ * ATmega 328P/1281/1284P/2560.
  *
  * Setting the first channel to GPIO_UNDEF allows multiple resolutions for the
  * PWM channel. Otherwise the resolution is fixed to 256, allowing duty cycle
@@ -326,6 +327,9 @@ extern "C" {
 #elif defined(CPU_ATMEGA1281)
     #define PWM_PINS_CH0 { GPIO_PIN(PORT_B, 7), GPIO_PIN(PORT_G, 5) }
     #define PWM_PINS_CH1 { GPIO_PIN(PORT_B, 4), GPIO_UNDEF }
+#elif defined(CPU_ATMEGA1284P)
+    #define PWM_PINS_CH0 { GPIO_PIN(PORT_B, 3), GPIO_PIN(PORT_B, 4) }
+    #define PWM_PINS_CH1 { GPIO_PIN(PORT_D, 7), GPIO_PIN(PORT_D, 6) }
 #elif defined(CPU_ATMEGA2560)
     #define PWM_PINS_CH0 { GPIO_PIN(PORT_B, 7), GPIO_PIN(PORT_G, 5) }
     #define PWM_PINS_CH1 { GPIO_PIN(PORT_B, 4), GPIO_PIN(PORT_H, 6) }
@@ -335,7 +339,9 @@ extern "C" {
     #define PWM_NUMOF           (0U)
 #endif
 
-#if defined(CPU_ATMEGA328P) || defined(CPU_ATMEGA1281) || defined(CPU_ATMEGA2560) || defined(CPU_ATMEGA32U4)
+#if defined(CPU_ATMEGA32U4) || defined(CPU_ATMEGA328P) || \
+    defined(CPU_ATMEGA1281) || defined(CPU_ATMEGA1284P) || \
+    defined(CPU_ATMEGA2560)
     static const pwm_conf_t pwm_conf[] = {
         {
             .dev = MINI_TIMER0,

examples/asymcute_mqttsn/Makefile.ci

@@ -5,6 +5,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     hifive1 \

examples/cord_ep/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     hifive1 \

examples/emcute_mqttsn/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     hifive1 \

examples/gcoap/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     i-nucleo-lrwan1 \

examples/gnrc_border_router/Makefile.ci

@@ -5,6 +5,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     b-l072z-lrwan1 \
     blackpill \

examples/gnrc_networking/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     blackpill \
     bluepill \

examples/gnrc_tftp/Makefile.ci

@@ -5,6 +5,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     b-l072z-lrwan1 \
     blackpill \

examples/ndn-ping/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     i-nucleo-lrwan1 \

examples/posix_sockets/Makefile.ci

@@ -5,6 +5,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     i-nucleo-lrwan1 \

tests/driver_cc110x/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     blackpill \
     bluepill \

tests/driver_enc28j60/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     i-nucleo-lrwan1 \
     mega-xplained \

tests/gnrc_ipv6_ext/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     hifive1 \
     hifive1b \

tests/gnrc_ipv6_ext_frag/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     blackpill \
     bluepill \

tests/gnrc_netif/Makefile.ci

@@ -5,6 +5,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     b-l072z-lrwan1 \
     blackpill \

tests/gnrc_rpl_srh/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     hifive1 \
     hifive1b \

tests/gnrc_sock_dns/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     chronos \
     hifive1 \

tests/gnrc_tcp/Makefile.ci

@@ -4,6 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     hifive1 \
     hifive1b \

tests/gnrc_udp/Makefile.ci

@@ -5,6 +5,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mega2560 \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega328p \
     calliope-mini \
     chronos \

tests/libfixmath_unittests/Makefile

@@ -2,7 +2,7 @@ include ../Makefile.tests_common
 
 BOARD_BLACKLIST := arduino-duemilanove arduino-leonardo \
                    arduino-mega2560 arduino-nano arduino-uno \
-                   atmega328p atmega256rfr2-xpro mega-xplained \
+                   atmega328p atmega256rfr2-xpro atmega1284p mega-xplained \
                    microduino-corerf waspmote-pro
 # arduino-mega2560: builds locally but breaks travis (possibly because of
 # differences in the toolchain)

tests/pkg_libb2/Makefile.ci

@@ -3,6 +3,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-leonardo \
     arduino-nano \
     arduino-uno \
+    atmega1284p \
     atmega256rfr2-xpro \
     atmega328p \
     chronos \

tests/sys_crypto/Makefile

@@ -8,6 +8,7 @@ BOARD_BLACKLIST += arduino-nano
 BOARD_BLACKLIST += arduino-uno
 BOARD_BLACKLIST += atmega256rfr2-xpro
 BOARD_BLACKLIST += atmega328p
+BOARD_BLACKLIST += atmega1284p
 BOARD_BLACKLIST += chronos
 BOARD_BLACKLIST += mega-xplained
 BOARD_BLACKLIST += microduino-corerf