From 1f98566c939c84a986ee8b60fde6aa601c3521da Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Tue, 26 Apr 2011 03:27:10 -0400 Subject: 0.0.10 Documentation checkpoint. The vast majority of the Maple-specific values have been pulled out of the higher-level overview pages and replaced with refs into documents under /docs/source/hardware/. Much of the work that's left to be done in this regard is labeled with versioned TODO and FIXME comments. Suggestions from StephenFromNYC and gbulmer were incorporated from this forum thread: http://forums.leaflabs.com/topic.php?id=703 --- docs/source/hardware/maple-ret6.rst | 276 ++++++++++++++++++++++++++++++++++++ 1 file changed, 276 insertions(+) create mode 100644 docs/source/hardware/maple-ret6.rst (limited to 'docs/source/hardware/maple-ret6.rst') diff --git a/docs/source/hardware/maple-ret6.rst b/docs/source/hardware/maple-ret6.rst new file mode 100644 index 0000000..06dcaff --- /dev/null +++ b/docs/source/hardware/maple-ret6.rst @@ -0,0 +1,276 @@ +.. highlight:: sh + +.. _maple-ret6: + +Maple RET6 Edition +================== + +.. contents:: Contents + :local: + +Technical Specifications +------------------------ + + * MCU: **STM32F103RET6**, a 32-bit ARM Cortex M3 microprocessor + * Clock Speed: **72 MHz** + * Operating Voltage: 3.3V + * Input Voltage (recommended): 3V-12V + * 39 Digital I/O Pins (:ref:`GPIO `) + * 16 Analog Input pins, 12 bit **ADC** resolution (:ref:`ADC `) + * 15 **PWM** pins at 16-bit resolution (:ref:`PWM `) + * Dedicated **USB** port for programming and communications (:ref:`USB`) + * External **JTAG** interface (:ref:`JTAG `) + * **512KB Flash** and **64KB SRAM** + * 64 Channel nested vector interrupt handler (including external interrupt on GPIOs) + * Integrated **SPI** (:ref:`SPI `) + * Integrated **I2C** (:ref:`I2C `) + * 12 Channels of Direct Memory Access (**DMA**) + * 3 **USART** and 2 **UART** devices (:ref:`USART `) + * Six 4-channel and two basic **timers** (:ref:`Timers `) + * Supplies up to 800mA @ 3.3v + * Support for low power and sleep modes (<500uA) + * Dimensions are 2.05″x2.1″ + +.. _maple-ret6-powering: + +Powering the Maple RET6 Edition +------------------------------- + +The Maple RET6 Edition's power source is determined by the header to +the left of the "LeafLabs" label on the silkscreen. The RET6 Edition +can be powered from the barrel jack connector, USB, or a LiPo battery. +We ship the RET6 Edition with a jumper on the USB selector. In order +to power it off of an alternative source, unplug the board, then move +the jumper to the desired selector before reconnecting power. + +You can also power the Maple via the pin labeled "Vin" on the lower +header. However, don't do this while simultaneously powering the +board from another source, or you could damage the it. + +Using the Built-in Battery Charger +---------------------------------- + +The RET6 Edition has a built-in LiPo battery charger. In order to use +it, put a jumper across the CHRG header on the power selection header +and across the USB, or EXT selectors, depending on whether you're +charging the battery via USB cable or barrel jack connector. The LED +labeled CHRG will light up while the battery is being charged. When +the battery is finished charging, the LED labeled DONE will also light +up. + +.. _maple-ret6-gpios: + +GPIO Information +---------------- + +The RET6 Edition features 38 ready-to-use general purpose input/output +(GPIO) pins for digital input/output, numbered ``D0`` through ``D37``. +These numbers correspond to the numeric values next to each header on +the Maple silkscreen. More GPIOs (numbered ``D39``\ --``43``) are +available through use in combination with the +:ref:`lang-disabledebugports` function; see the :ref:`board-specific +debug pin constants ` for more information. + +.. TODO [0.1.0] silkscreen pictures which expand abbreviations + +.. _maple-ret6-pin-map-master: + +Master Pin Map +^^^^^^^^^^^^^^ + +.. TODO [0.0.10] Update from base Maple information + +This table shows the available functionality on every GPIO pin, by +peripheral type. The "STM32" column refers to the port and number that +the header is connected to on the microcontroller. The "5V?" column +documents whether or not the pin is 5 volt tolerant. + +.. csv-table:: + :header: "Pin", "STM32", ":ref:`ADC `", ":ref:`Timer `", ":ref:`I2C `", ":ref:`UART `", ":ref:`SPI `", "5v?" + + "D0", "PA3", "ADC3", "TIM2_CH4", "-", "USART2_RX", "-", "No" + "D1", "PA2", "ADC2", "TIM2_CH3", "-", "USART2_TX", "-", "No" + "D2", "PA0", "ADC0", "TIM2_CH1_ETR", "-", "USART2_CTS", "-", "No" + "D3", "PA1", "ADC1", "TIM2_CH2", "-", "USART2_RTS", "-", "No" + "D4", "PB5", "-", "-", "ISC1_SMBA", "-", "-", "No" + "D5", "PB6", "-", "TIM4_CH1", "I2C1_SCL", "-", "-", "Yes" + "D6", "PA8", "-", "TIM1_CH1", "-", "USART1_CK", "-", "Yes" + "D7", "PA9", "-", "TIM1_CH2", "-", "USART1_TX", "-", "Yes" + "D8", "PA10", "-", "TIM1_CH3", "-", "USART1_RX", "-", "Yes" + "D9", "PB7", "-", "TIM4_CH2", "I2C1_SDA", "-", "-", "Yes" + "D10", "PA4", "ADC4", "-", "-", "USART2_CK", "SPI1_NSS", "No" + "D11", "PA7", "ADC7", "TIM3_CH2", "-", "-", "SPI1_MOSI", "No" + "D12", "PA6", "ADC6", "TIM3_CH1", "-", "-", "SPI1_MISO", "No" + "D13", "PA5", "ADC5", "-", "-", "-", "SPI1_SCK", "No" + "D14", "PB8", "-", "TIM4_CH3", "-", "-", "-", "Yes" + "D15", "PC0", "ADC10", "-", "-", "-", "-", "No" + "D16", "PC1", "ADC11", "-", "-", "-", "-", "No" + "D17", "PC2", "ADC12", "-", "-", "-", "-", "No" + "D18", "PC3", "ADC13", "-", "-", "-", "-", "No" + "D19", "PC4", "ADC14", "-", "-", "-", "-", "No" + "D20", "PC5", "ADC15", "-", "-", "-", "-", "No" + "D21", "PC13", "-", "-", "-", "-", "-", "No" + "D22", "PC14", "-", "-", "-", "-", "-", "No" + "D23", "PC15", "-", "-", "-", "-", "-", "No" + "D24", "PB9", "-", "TIM4_CH4", "-", "-", "-", "Yes" + "D25", "PD2", "-", "TIM3_ETR", "-", "-", "-", "Yes" + "D26", "PC10", "-", "-", "-", "-", "-", "Yes" + "D27", "PB0", "ADC8", "TIM3_CH3", "-", "-", "-", "No" + "D28", "PB1", "ADC9", "TIM3_CH4", "-", "-", "-", "No" + "D29", "PB10", "-", "-", "I2C2_SCL", "USART3_TX", "-", "Yes" + "D30", "PB11", "-", "-", "I2C2_SDA", "USART3_RX", "-", "Yes" + "D31", "PB12", "-", "TIM1_BKIN", "I2C2_SMBA", "USART3_CK", "SPI2_NSS", "Yes" + "D32", "PB13", "-", "TIM1_CH1N", "-", "USART3_CTS", "SPI2_SCK", "Yes" + "D33", "PB14", "-", "TIM1_CH2N", "-", "USART3_RTS", "SPI2_MISO", "Yes" + "D34", "PB15", "-", "TIM1_CH3N", "-", "-", "SPI2_MOSI", "Yes" + "D35", "PC6", "-", "-", "-", "-", "-", "Yes" + "D36", "PC7", "-", "-", "-", "-", "-", "Yes" + "D37", "PC8", "-", "-", "-", "-", "-", "Yes" + +.. TODO [0.0.10] Another table for the JTAG pins + +Timer Pin Map +^^^^^^^^^^^^^ + +.. TODO [0.0.10] Add Timer 5,6,7,8 information + +The following table shows what pins are associated with a particular +timer's capture/compare channels. + +.. csv-table:: + :header: Timer, Ch. 1, Ch. 2, Ch. 3, Ch. 4 + :delim: | + + 1 | D6 | D7 | D8 | - + 2 | D2 | D3 | D1 | D0 + 3 | D12 | D11 | D27 | D28 + 4 | D5 | D9 | D14 | D24 + +.. _maple-ret6-exti-map: + +EXTI Line Pin Map +^^^^^^^^^^^^^^^^^ + +The following table shows which pins connect to which :ref:`EXTI lines +` on the Maple RET6 Edition. + +.. list-table:: + :widths: 1 1 + :header-rows: 1 + + * - EXTI Line + - Pins + * - EXTI0 + - 2, 15, 27 + * - EXTI1 + - 3, 16, 28 + * - EXTI2 + - 1, 17, 25 + * - EXTI3 + - 0, 18 + * - EXTI4 + - 10, 19 + * - EXTI5 + - 4, 13, 20 + * - EXTI6 + - 5, 12, 35 + * - EXTI7 + - 9, 11, 36 + * - EXTI8 + - 6, 14, 37 + * - EXTI9 + - 7, 25, 28 + * - EXTI10 + - 8, 26, 29 + * - EXTI11 + - 30 + * - EXTI12 + - 31 + * - EXTI13 + - 21, 32 + * - EXTI14 + - 22, 33 + * - EXTI15 + - 23, 34 + +.. _maple-ret6-usart-map: + +USART Pin Map +^^^^^^^^^^^^^ + +.. FIXME [0.0.10] UART4 and UART5 information + +The Maple RET6 Edition has three serial ports (also known as a UARTs +or USARTs): ``Serial1``, ``Serial2``, and ``Serial3``. They +communicate using the pins summarized in the following table: + +.. csv-table:: + :header: Serial Port, TX, RX, CK, CTS, RTS + :delim: | + + ``Serial1`` | 7 | 8 | 6 | - | - + ``Serial2`` | 1 | 0 | 10 | 2 | 3 + ``Serial3`` | 29 | 30 | 31 | 32 | 33 + +Board-Specific Values +--------------------- + +.. TODO [0.0.10] + +Stub. + +Hardware Design Files +--------------------- + +The hardware schematics and board layout files are available in the +`Maple Github repository `_. Other +than the processor used, the design files for the Maple RET6 edition +are identical to the Maple Rev 5, which are in the ``maple-r5`` +subdirectory of the Maple repository. A schematic for a JTAG adapter +suitable for use with Maple is available in the ``jtagadapter`` +directory. + +From the Github repository main page, you can download the entire +repository by clicking the "Download" button. If you are familiar +with `git `_, you can also clone the repository +at the command line with :: + + $ git clone git://github.com/leaflabs/maple.git + +.. _maple-ret6-failure-modes: + +Failure Modes +------------- + +The following known failure modes apply to all Maple boards. The +failure modes aren't design errors, but are easy ways to break or +damage your board permanently. + +* **High voltage on non-tolerant pins**: not all header pins are 5V + compatible; so e.g. connecting certain serial devices in the wrong + way could over-voltage the pins. The :ref:`pin-mapping master table + ` details which pins are 5V-tolerant. + +Errata +------ + +This section lists known issues and warnings for the Maple RET6 Edition. + +* **DAC, UART4, UART5 GPIOs unavailable**: Pins related to the digital + to analog converter (DAC) and UARTs 4 and 5 are not broken out to + headers. The RET6 Edition's hardware layout is identical to that of + the Maple Rev 5, which wasn't designed for use with these + STM32F103RET6-only peripherals. + +Recommended Reading +------------------- + +* STMicro documentation for STM32F103RE microcontroller: + + * `Datasheet + `_ (PDF) + * `Reference Manual + `_ (PDF) + * `Programming Manual + `_ + (PDF; assembly language and register reference) -- cgit v1.2.3