diff options
| author | Bill Richardson <wfrichar@chromium.org> | 2015-05-19 00:00:23 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-06-18 05:07:55 +0000 |
| commit | b72a5f5e8e97ba86736c1e26b4204fc6d0c215da (patch) | |
| tree | 155559713f9432bbc849bbe18a12983a672db5c6 /chip/stm32/usb_gpio.h | |
| parent | dd1987051b473e74dab3490921d0cc77c76fcac3 (diff) | |
| download | chrome-ec-b72a5f5e8e97ba86736c1e26b4204fc6d0c215da.tar.gz | |
discovery-stm32f072: Blink the LEDs
This just makes the LEDs blink continually, because I have a
development board sitting on my desk and I like to see it doing
something.
You can still force the GPIOs on and off using the tool in
extra/usb_gpio/.
BUG=none
BRANCH=none
TEST=make buildall
Try it:
sudo make BOARD=discovery-stm32f072 flash
The LEDs blink.
Force them on and off with:
cd extra/usb_gpio
make
./usb_gpio write -1 0
./usb_gpio write 0 -1
./usb_gpio write 2 0
./usb_gpio write 4 2
To resume blinking, use
./usb_gpio write 0 0
Change-Id: Iadbe7436c02de5b6eae81885d95bad154ca3692c
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/274131
Reviewed-by: Anton Staaf <robotboy@chromium.org>
Diffstat (limited to 'chip/stm32/usb_gpio.h')
| -rw-r--r-- | chip/stm32/usb_gpio.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/chip/stm32/usb_gpio.h b/chip/stm32/usb_gpio.h index 2027df9d21..56f3d72c57 100644 --- a/chip/stm32/usb_gpio.h +++ b/chip/stm32/usb_gpio.h @@ -10,12 +10,19 @@ #include "compile_time_macros.h" #include "usb.h" +struct usb_gpio_state { + uint32_t set_mask; + uint32_t clear_mask; +}; + /* * Compile time Per-USB gpio configuration stored in flash. Instances of this * structure are provided by the user of the USB gpio. This structure binds * together all information required to operate a USB gpio. */ struct usb_gpio_config { + struct usb_gpio_state *state; + /* * Endpoint index, and pointers to the USB packet RAM buffers. */ @@ -55,6 +62,7 @@ struct usb_gpio_config { static usb_uint CONCAT2(NAME, _ep_rx_buffer)[USB_GPIO_RX_PACKET_SIZE / 2] __usb_ram; \ static usb_uint CONCAT2(NAME, _ep_tx_buffer)[USB_GPIO_TX_PACKET_SIZE / 2] __usb_ram; \ struct usb_gpio_config const NAME = { \ + .state = &((struct usb_gpio_state){}), \ .endpoint = ENDPOINT, \ .rx_ram = CONCAT2(NAME, _ep_rx_buffer), \ .tx_ram = CONCAT2(NAME, _ep_tx_buffer), \ @@ -106,7 +114,8 @@ struct usb_gpio_config { USB_DECLARE_EP(ENDPOINT, \ CONCAT2(NAME, _ep_tx), \ CONCAT2(NAME, _ep_rx), \ - CONCAT2(NAME, _ep_reset)); + CONCAT2(NAME, _ep_reset)) + /* * These functions are used by the trampoline functions defined above to |