Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add PIN_APA102 and PIN_LED support to 2nd stage bootloader #25

Merged
merged 1 commit into from
Nov 11, 2020
+99 −2
Merged

Add PIN_APA102 and PIN_LED support to 2nd stage bootloader #25

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
101 changes: 99 additions & 2 deletions ports/esp32s2/components/bootloader/subproject/main/bootloader_start.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -280,6 +280,49 @@ static void board_neopixel_set(uint32_t num_pin, uint8_t pixels[], uint32_t numB
}
#endif

#ifdef PIN_APA102_DATA
//Bit bang out 8 bits
static void SPI_write(int32_t num_pin_data,uint32_t num_pin_sck,uint8_t c) {

uint8_t i;
for (i=0; i<8 ;i++)
{
if (!(c&0x80)) {
gpio_ll_set_level(&GPIO, num_pin_data, 0);
}
else {
gpio_ll_set_level(&GPIO, num_pin_data, 1);
}
delay_cycle( ns2cycle(200000) ) ;
gpio_ll_set_level(&GPIO, num_pin_sck, 1);
c<<=1;
delay_cycle( ns2cycle(200000) ) ;
gpio_ll_set_level(&GPIO, num_pin_sck, 0);
delay_cycle( ns2cycle(200000) );
}

}
static void board_apa102_set(uint32_t num_pin_data,uint32_t num_pin_sck, uint8_t pixels[], uint32_t numBytes)
{
// WS2812B should be
uint32_t const time0 = ns2cycle(400);
uint32_t const time1 = ns2cycle(800);
uint32_t const period = ns2cycle(1250);

SPI_write(num_pin_data,num_pin_sck,0x00);
SPI_write(num_pin_data,num_pin_sck,0x00);
SPI_write(num_pin_data,num_pin_sck,0x00);
SPI_write(num_pin_data,num_pin_sck,0x00);

SPI_write(num_pin_data,num_pin_sck,0xe0 | APA102_BRIGHTNESS);

for(uint16_t n=0; n<numBytes; n++) {
SPI_write(num_pin_data,num_pin_sck,pixels[n]);
}


}
#endif

static void board_led_on(void)
{
Expand All @@ -290,20 +333,57 @@ static void board_led_on(void)
gpio_ll_set_level(&GPIO, PIN_NEOPIXEL, 0);
#endif

#ifdef PIN_APA102_DATA
gpio_pad_select_gpio(PIN_APA102_DATA);
gpio_ll_input_disable(&GPIO, PIN_APA102_DATA);
gpio_ll_output_enable(&GPIO, PIN_APA102_DATA);
gpio_ll_set_level(&GPIO, PIN_APA102_DATA, 0);

gpio_pad_select_gpio(PIN_APA102_SCK);
gpio_ll_input_disable(&GPIO, PIN_APA102_SCK);
gpio_ll_output_enable(&GPIO, PIN_APA102_SCK);
gpio_ll_set_level(&GPIO, PIN_APA102_SCK, 0);

gpio_pad_select_gpio(PIN_APA102_PWR);
gpio_ll_input_disable(&GPIO, PIN_APA102_PWR);
gpio_ll_output_enable(&GPIO, PIN_APA102_PWR);
gpio_ll_set_level(&GPIO, PIN_APA102_PWR, 0);
#endif

#ifdef PIN_LED
gpio_pad_select_gpio(PIN_LED);
gpio_ll_input_disable(&GPIO, PIN_LED);
gpio_ll_output_enable(&GPIO, PIN_LED);
gpio_ll_set_level(&GPIO, PIN_LED, 0);
#endif

// Need at least 200 us for initial delay although Neopixel reset time is only 50 us
delay_cycle( ns2cycle(200000) ) ;

// Note: WS2812 color order is GRB
uint8_t pixels[3] = { 0x00, 0x86, 0xb3 };
#ifdef PIN_NEOPIXEL
uint8_t pixels[3] = { 0x00, 0x86, 0xb3 };
board_neopixel_set(PIN_NEOPIXEL, pixels, sizeof(pixels));
#endif

#ifdef PIN_LED
gpio_ll_set_level(&GPIO, PIN_LED, 1);
#endif

// APA102 colour order is BGR
#ifdef PIN_APA102_DATA
uint8_t pixels[3] = { 0xb3, 0x00, 0x86 };
gpio_ll_set_level(&GPIO, PIN_APA102_PWR, 1);
board_apa102_set(PIN_APA102_DATA,PIN_APA102_SCK, pixels, sizeof(pixels));
#endif


}

static void board_led_off(void)
{
uint8_t pixels[3] = { 0x00, 0x00, 0x00 };
#ifdef PIN_NEOPIXEL
uint8_t pixels[3] = { 0x00, 0x00, 0x00 };
board_neopixel_set(PIN_NEOPIXEL, pixels, sizeof(pixels));

// Neopixel reset time
Expand All @@ -312,4 +392,21 @@ static void board_led_off(void)
// TODO how to de-select GPIO pad to set it back to default state !?
gpio_ll_output_disable(&GPIO, PIN_NEOPIXEL);
#endif

#ifdef PIN_APA102_DATA
uint8_t pixels[3] = { 0x00, 0x00, 0x00 };
board_apa102_set(PIN_APA102_DATA,PIN_APA102_SCK, pixels, sizeof(pixels));

gpio_ll_output_disable(&GPIO, PIN_APA102_DATA);
gpio_ll_output_disable(&GPIO, PIN_APA102_SCK);
gpio_ll_set_level(&GPIO, PIN_APA102_PWR, 0);
gpio_ll_output_disable(&GPIO, PIN_APA102_PWR);
#endif


#ifdef PIN_LED
gpio_ll_set_level(&GPIO, PIN_LED, 0);
gpio_ll_output_disable(&GPIO, PIN_LED);
#endif

}