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Commit 9f024deb authored by patacongo's avatar patacongo
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Add some lm3s6965 board specifics 

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2657 42af7a65-404d-4744-a932-0658087f49c3
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arch/arm/src/lm3s/chip.h
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......@@ -55,7 +55,7 @@
# define LM3S_NUARTS 2 /* Two UART modules */
# define LM3S_NI2C 2 /* Two I2C modules */
# define LM3S_NADC 1 /* One ADC module */
# define LM2S_NPWM 0 /* No PWM modules */
# define LM2S_NPWM 0 /* No PWM generator modules */
# define LM3S_NQEI 0 /* No quadrature encoders */
# define LC3S_NGPIOS 38 /* 5-38 GPIOs, depending on configuration */
#elif defined(CONFIG_ARCH_CHIP_LM3S6965)
......@@ -65,7 +65,7 @@
# define LM3S_NUARTS 3 /* Three UART modules */
# define LM3S_NI2C 2 /* Two I2C modules */
# define LM3S_NADC 1 /* One ADC module */
# define LM2S_NPWM 3 /* Three PWM modules */
# define LM2S_NPWM 3 /* Three PWM generator modules */
# define LM3S_NQEI 2 /* Two quadrature encoders */
# define LC3S_NGPIOS 42 /* 0-42 GPIOs */
#else
......
configs/lm3s6965-ek/README.txt
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......@@ -3,6 +3,80 @@ README
README for NuttX port to the Stellaris LMS36965 Evaluation Kit
Contents
^^^^^^^^
Stellaris LMS36965 Evaluation Kit
Development Environment
GNU Toolchain Options
IDEs
NuttX buildroot Toolchain
USB Device Controller Functions
Stellaris LM3S6965 Evaluation Kit Configuration Options
Configurations
Stellaris LMS36965 Evaluation Kit
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The Stellaris LM3S6965 Evaluation Board includes the following features:
o Stellaris LM3S6965 microcontroller with fully-integrated 10/100 embedded
Ethernet controller
o Simple setup; USB cable provides serial communication, debugging, and
power
o OLED graphics display with 128 x 96 pixel resolution
o User LED, navigation switches, and select pushbuttons
o Magnetic speaker
o LM3S6965 I/O available on labeled break-out pads
o Standard ARM® 20-pin JTAG debug connector with input and output modes
o USB interface for debugging and power supply
o MicroSD card slot
Features of the LM3S6965 Microcontroller
o 32-bit RISC performance using ARM® Cortex™-M3 v7M architecture
– 50-MHz operation
– Hardware-division and single-cycle-multiplication
– Integrated Nested Vectored Interrupt Controller (NVIC)
– 42 interrupt channels with eight priority levels
o 256 KB single-cycle flash
o 64 KB single-cycle SRAM
o Four general-purpose 32-bit timers
o Integrated Ethernet MAC and PHY
o Three fully programmable 16C550-type UARTs
o Four 10-bit channels (inputs) when used as single-ended inputs
o Two independent integrated analog comparators
o Two I2C modules
o Three PWM generator blocks
– One 16-bit counter
– Two comparators
– Produces two independent PWM signals
– One dead-band generator
o Two QEI modules with position integrator for tracking encoder position
o 0 to 42 GPIOs, depending on user configuration
o On-chip low drop-out (LDO) voltage regulator
GPIO Usage
PIN SIGNAL EVB Function
--- ----------- ---------------------------------------
26 PA0/U0RX Virtual COM port receive
27 PA1/U0TX Virtual COM port transmit
10 PD0/IDX0 SD card chip select
11 PD1/PWM1 Sound
30 PA4/SSI0RX SD card data out
31 PA5/SSI0TX SD card and OLED display data in
28 PA2/SSI0CLK SD card and OLED display clock
22 PC7/PHB0 OLED display data/control select
29 PA3/SSI0FSS OLED display chip select
73 PE1/PWM5 Down switch
74 PE2/PHB1 Left switch
72 PE0/PWM4 Up switch
75 PE3/PHA1 Right switch
61 PF1/IDX1 Select switch
47 PF0/PWM0 User LED
23 PC6/CCP3 Enable +15 V
Development Environment
^^^^^^^^^^^^^^^^^^^^^^^
......@@ -139,63 +213,36 @@ NuttX buildroot Toolchain
detailed PLUS some special instructions that you will need to follow if you are
building a Cortex-M3 toolchain for Cygwin under Windows.
Ethernet-Bootloader
^^^^^^^^^^^^^^^^^^^
Here are some notes about using the Luminary Ethernet boot-loader built
into the Stellaris LM3S6965 Evaluation Kit.
Built-In Application:
- The board has no fixed IP address but uses DHCP to get an address.
I used a D-link router; I can use a web browser to surf to the D-link
web page to get the address assigned by DHCP.
- Then you can use this IP address in your browser to surf to the evaluation
board. It presents several interesting pages -- the most important is
the page called "Firmware Update". That page includes instructions on
how to download code to the evaluation board.
- After you burn the first program, you lose this application. Then you
will probably be better off connected directly to the Stellaris LM3S6965
Evaluation Kit or through a switch (The router caused problems for me
during downloads).
Using the Ethernet Bootloader:
NOTE: This is an OABI toolchain.
- You will need the "LM Flash Programmer application". You can get that
program from the Luminary web site. There is a link on the LM3S6918 page.
USB Device Controller Functions
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Device Overview
- Is there any documentation for using the bootloader? Yes and No: There
is an application note covering the bootloader on the Luminary site, but
it is not very informative.
An FT2232 device from Future Technology Devices International Ltd manages
USB-to-serial conversion. The FT2232 is factory configured by Luminary
Micro to implement a JTAG/SWD port (synchronous serial) on channel A and
a Virtual COM Port (VCP) on channel B. This feature allows two simultaneous
communications links between the host computer and the target device using
a single USB cable. Separate Windows drivers for each function are provided
on the Documentation and Software CD.
- Are there any special things I have to do in my code, other than setting
the origin to 0x0000:2000 (APP_START_ADDRESS)? No. The bootloader assumes
that you have a vector table at that address . The bootloader does the
following each time it boots (after you have downloaded the first valid
application):
A small serial EEPROM holds the FT2232 configuration data. The EEPROM is not
accessible by the LM3S6965 microcontroller. For full details on FT2232
operation, go to www.ftdichip.com.
o The bootloader sets the vector table register to the APP_START_ADDRESS,
o It sets the stack pointer to the address at APP_START_ADDRESS, and then
o Jumps to the address at APP_START_ADDRESS+4.
USB to JTAG/SWD
- You can force the bootloader to skip starting the application and stay
in the update mode. You will need to do this in order to download a new
application. You force the update mode by holding the user button on the
Stellaris LM3S6965 Evaluation Kit while resetting the board. The user
button is GPIOA, pin 6 (call FORCED_UPDATE_PIN in the bootloader code).
The FT2232 USB device performs JTAG/SWD serial operations under the control
of the debugger. A CPLD (U2) multiplexes SWD and JTAG functions and, when
working in SWD mode, provides direction control for the bidirectional data
line.
- Note 1: I had to remove my D-Link router from the configuration in order
to use the LM Flash Programmer (the Bootloader issues BOOTP requests to
communicate with the LM Flash Programmer, my router was responding to
these BOOTP requests and hosing the download). It is safer to connect
via a switch or via an Ethernet switch.
Virtual COM Port
- Note 2: You don't need the router's DHCPD server in the download
configuration; the Luminary Flash Programmer has the capability of
temporarily assigning the IP address to the Stellaris LM3S6965 Evaluation
Kit via BOOTP.
The Virtual COM Port (VCP) allows Windows applications (such as HyperTerminal)
to communicate with UART0 on the LM3S6965 over USB. Once the FT2232 VCP
driver is installed, Windows assigns a COM port number to the VCP channel.
Stellaris LM3S6965 Evaluation Kit Configuration Options
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
......
configs/lm3s6965-ek/include/board.h
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/* LED definitions ******************************************************************/
/* The Eagle-100 has only one user LED: Port E, Bit 1. Below is the mapping of this
/* The LMS36965 Eval Kit has only one user LED: Port F, Bit 0. Below is the mapping of this
* single LED. From this single LED, we can get the following information:
*
* OFF Steady: The system has failed to boot to the point of enabling interrupts
......
configs/lm3s6965-ek/src/lm3s6965ek_internal.h
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/* LM3S6965 Eval Kit ***************************************************************/
/* GPIO for microSD card chip select */
/* GPIO Usage
*
* PIN SIGNAL EVB Function
* --- ----------- ---------------------------------------
* 26 PA0/U0RX Virtual COM port receive
* 27 PA1/U0TX Virtual COM port transmit
* 10 PD0/IDX0 SD card chip select
* 11 PD1/PWM1 Sound
* 30 PA4/SSI0RX SD card data out
* 31 PA5/SSI0TX SD card and OLED display data in
* 28 PA2/SSI0CLK SD card and OLED display clock
* 22 PC7/PHB0 OLED display data/control select
* 29 PA3/SSI0FSS OLED display chip select
* 73 PE1/PWM5 Down switch
* 74 PE2/PHB1 Left switch
* 72 PE0/PWM4 Up switch
* 75 PE3/PHA1 Right switch
* 61 PF1/IDX1 Select switch
* 47 PF0/PWM0 User LED
* 23 PC6/CCP3 Enable +15 V
*/
/* GPIO for microSD card chip select */
#define SDCCS_GPIO (GPIO_FUNC_OUTPUT | GPIO_PADTYPE_STDWPU | GPIO_STRENGTH_4MA | \
GPIO_VALUE_ONE | GPIO_PORTG | 1)
#define LED_GPIO (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTE | 1)
GPIO_VALUE_ONE | GPIO_PORTD | 0)
#define LED_GPIO (GPIO_FUNC_OUTPUT | GPIO_VALUE_ONE | GPIO_PORTF | 0)
/************************************************************************************
* Public Functions
......
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