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fw: Steady white led while waiting cmd; led off while loading app

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Signed-off-by: Daniel Lublin <daniel@lublin.se>
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Daniel Lublin 2023-03-01 11:50:24 +01:00
parent 7eb4d0304b
commit 4afdc1cd1f
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7 changed files with 19 additions and 37 deletions
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21
doc/quickstart.md
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@ -31,14 +31,15 @@ The USB stick can remain in the jig during repeated development,
programming and testing cycles. The USB stick should then be connected
to the computer using the provided USB-C cable (use the USB-C-to-A
adapter if needed). The jig also has a cutout to allow touching where
the touch sensor is located (next to the LED). Note that connecting
the USB stick to the computer is not required for programming it. Note
also that with this setup, to reset the USB stick back to firmware
mode after loading an app, you need to unplug both the USB cable to
the stick and the one to the programmer. Alternatively, you can try
the script in `../hw/application_fpga/tools/reset-tk1` which pokes at
the TKey that's sitting in the jig, leaving it in firmware mode so
that a new app can be loaded.
the touch sensor is located (next to the LED on the outer edge). Note
that connecting the USB stick to the computer is not required for
programming it. Note also that with this setup, to reset the USB stick
back to firmware mode after loading an app, you need to unplug both
the USB cable to the stick and the one to the programmer.
Alternatively, you can try the script in
`../hw/application_fpga/tools/reset-tk1` which pokes at the TKey
that's sitting in the jig, leaving it in firmware mode so that a new
app can be loaded.
On Linux, `lsusb` should list the connected programmer as `cafe:4004
Blinkinlabs ICE40 programmer`. If the USB stick is also connected it
@ -65,8 +66,8 @@ $ make prog_flash
After programming, the TKey can be connected to your computer (use the
USB-C-to-A adapter if needed) and will boot the firmware. When boot
has completed it will start flashing the LED white. This indicates
that it is ready to receive and measure an app.
has completed the LED will be steady white. This indicates that it is
ready to receive and measure an app.
To try out an app, continue to the README.md the apps repo:
https://github.com/tillitis/tillitis-key1-apps#readme

2
doc/toolchain_setup.md
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@ -29,7 +29,7 @@ sudo apt install build-essential clang lld llvm bison flex libreadline-dev \
## Gateware: Yosys/Icestorm toolchain
If the LED of your TKey is flashing white when you plug it, then the
If the LED of your TKey is steady white when you plug it, then the
firmware is running and it's already usable! If you want to develop
TKey apps, then only the above general development environment is
needed.

2
hw/application_fpga/fw/tk1/led.c
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@ -13,7 +13,7 @@ void forever_redflash()
int led_on = 0;
for (;;) {
*led = led_on ? LED_RED : 0;
*led = led_on ? LED_RED : LED_BLACK;
for (volatile int i = 0; i < 800000; i++) {
}
led_on = !led_on;

3
hw/application_fpga/fw/tk1/led.h
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@ -11,12 +11,13 @@
// clang-format off
static volatile uint32_t *led = (volatile uint32_t *)TK1_MMIO_TK1_LED;
// clang-format on
#define LED_BLACK 0
#define LED_RED (1 << TK1_MMIO_TK1_LED_R_BIT)
#define LED_GREEN (1 << TK1_MMIO_TK1_LED_G_BIT)
#define LED_BLUE (1 << TK1_MMIO_TK1_LED_B_BIT)
#define LED_WHITE (LED_RED | LED_GREEN | LED_BLUE)
// clang-format on
void forever_redflash();
#endif

6
hw/application_fpga/fw/tk1/main.c
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@ -234,12 +234,8 @@ int main()
}
uint8_t in;
if (state == FW_STATE_LOADING) {
*led = LED_WHITE;
*led = (state == FW_STATE_LOADING) ? LED_BLACK : LED_WHITE;
in = readbyte();
} else {
in = readbyte_ledflash(LED_WHITE, 800000);
}
if (parseframe(in, &hdr) == -1) {
htif_puts("Couldn't parse header\n");

15
hw/application_fpga/fw/tk1/proto.c
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@ -13,7 +13,6 @@ static volatile uint32_t *can_rx = (volatile uint32_t *)TK1_MMIO_UART_RX_STATUS;
static volatile uint32_t *rx = (volatile uint32_t *)TK1_MMIO_UART_RX_DATA;
static volatile uint32_t *can_tx = (volatile uint32_t *)TK1_MMIO_UART_TX_STATUS;
static volatile uint32_t *tx = (volatile uint32_t *)TK1_MMIO_UART_TX_DATA;
static volatile uint32_t *led = (volatile uint32_t *)TK1_MMIO_TK1_LED;
// clang-format on
uint8_t genhdr(uint8_t id, uint8_t endpoint, uint8_t status, enum cmdlen len)
@ -134,20 +133,6 @@ uint8_t readbyte()
}
}
uint8_t readbyte_ledflash(int ledvalue, int loopcount)
{
int led_on = 0;
for (;;) {
*led = led_on ? ledvalue : 0;
for (int i = 0; i < loopcount; i++) {
if (*can_rx) {
return *rx;
}
}
led_on = !led_on;
}
}
int read(uint8_t *buf, size_t bufsize, size_t nbytes)
{
if (nbytes > bufsize) {

1
hw/application_fpga/fw/tk1/proto.h
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@ -56,7 +56,6 @@ void fwreply(struct frame_header hdr, enum fwcmd rspcode, uint8_t *buf);
void writebyte(uint8_t b);
void write(uint8_t *buf, size_t nbytes);
uint8_t readbyte();
uint8_t readbyte_ledflash(int ledvalue, int loopcount);
int read(uint8_t *buf, size_t bufsize, size_t nbytes);
#endif