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https://github.com/saymrwulf/xous-core.git
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implement logo drawing for oled
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bunnie
parent
b572db3f3f
commit
6fedae8e73
1 changed files with 35 additions and 110 deletions
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@ -1,114 +1,39 @@
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use core::mem::size_of;
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use cramium_hal::iox::{IoGpio, IoSetup};
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use cramium_hal::udma::UdmaGlobalConfig;
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use cramium_hal::ifram::IframRange;
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use cramium_hal::iox::{IoSetup, Iox};
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use cramium_hal::udma::{GlobalConfig, PeriphId};
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use cramium_hal::{iox, udma};
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pub const FB_WIDTH_WORDS: usize = 11;
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pub const FB_LINES: usize = 536;
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pub fn show_logo(pclk_freq: u32, udma_global: &mut GlobalConfig, iox: &mut Iox) {
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let channel = {
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const SPI_CS_PIN: u8 = 5;
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const SPI_CLK_PIN: u8 = 4;
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const SPI_DAT_PIN: u8 = 0;
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const SPI_PORT: iox::IoxPort = iox::IoxPort::PD;
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// SPIM_CLK_A[0]
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iox.setup_pin(
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SPI_PORT,
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SPI_CLK_PIN,
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Some(iox::IoxDir::Output),
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Some(iox::IoxFunction::AF1),
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None,
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None,
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Some(iox::IoxEnable::Enable),
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Some(iox::IoxDriveStrength::Drive2mA),
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);
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// SPIM_SD0_A[0]
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iox.setup_pin(
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SPI_PORT,
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SPI_DAT_PIN,
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Some(iox::IoxDir::Output),
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Some(iox::IoxFunction::AF1),
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None,
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None,
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Some(iox::IoxEnable::Enable),
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Some(iox::IoxDriveStrength::Drive2mA),
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);
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// SPIM_CSN0_A[0]
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// chip select toggle by UDMA has ~6 cycles setup and 1 cycles hold time, which
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// meets the requirements for the display.
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iox.setup_pin(
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SPI_PORT,
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SPI_CS_PIN,
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Some(iox::IoxDir::Output),
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Some(iox::IoxFunction::AF1),
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None,
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Some(iox::IoxEnable::Enable),
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Some(iox::IoxEnable::Enable),
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Some(iox::IoxDriveStrength::Drive2mA),
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);
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// using bank SPIM_B[1]
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udma_global.clock_on(PeriphId::Spim0);
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udma::SpimChannel::Channel0
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};
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// safety: this is safe because we remembered to set up the clock config; and,
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// this binding should live for the lifetime of Xous so we don't have to worry about unmapping.
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let mut spim = unsafe {
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cramium_hal::udma::Spim::new_with_ifram(
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channel,
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2_000_000,
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pclk_freq,
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udma::SpimClkPol::LeadingEdgeRise,
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udma::SpimClkPha::CaptureOnLeading,
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udma::SpimCs::Cs0,
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3,
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2,
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None,
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// one extra line for handling the addressing setup
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(FB_LINES + 1) * FB_WIDTH_WORDS * size_of::<u32>(),
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0,
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None,
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None,
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IframRange::from_raw_parts(utralib::HW_IFRAM0_MEM, utralib::HW_IFRAM0_MEM, 24576),
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)
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};
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let mut next_free_line = 0;
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let hwfb = spim.tx_buf_mut();
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// safety: this is safe because `u32` has no invalid values
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// set the mode and address
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// the very first line is unused, except for the mode & address info
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// this is done just to keep the math easy for computing strides & alignments
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for src_line in 0..FB_LINES {
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hwfb[(next_free_line + 1) * FB_WIDTH_WORDS - 1] = (hwfb[(next_free_line + 1) * FB_WIDTH_WORDS - 1]
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& 0x0000_FFFF)
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| (((src_line as u32) << 6) | 0b001) << 16;
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// now copy the data
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hwfb[(next_free_line + 1) * FB_WIDTH_WORDS..(next_free_line + 2) * FB_WIDTH_WORDS].copy_from_slice(
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&crate::platform::cramium::poweron_bt::LOGO_MAP
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[src_line * FB_WIDTH_WORDS..(src_line + 1) * FB_WIDTH_WORDS],
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);
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if next_free_line < FB_LINES as usize {
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next_free_line += 1;
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pub fn show_logo<T>(pclk_freq: u32, udma_global: &dyn UdmaGlobalConfig, iox: &T)
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where
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T: IoSetup + IoGpio,
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{
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// test the display SPI interface
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// safety: this is called exactly once on boot
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let mut sh1107 = cramium_hal::sh1107::Oled128x128::new(iox, udma_global);
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sh1107.init();
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{
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/* // pattern test for debugging pixel orientations - done with this now, I think?
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let buf = sh1107.buffer_mut();
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crate::println!("oled test");
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for (i, chunk) in buf.chunks_mut(128).enumerate() {
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for (j, pixel) in chunk.iter_mut().enumerate() {
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// *pixel = (i as u8) << 5 + j as u8;
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if j % 2 == 0 {
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*pixel = 0x55 + i as u8;
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} else {
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*pixel = 0xAA + i as u8;
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}
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}
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}
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crate::println!("oled test end");
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*/
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sh1107.buffer_mut().fill(0);
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for (i, b) in crate::platform::cramium::poweron_bt::LOGO_MAP.iter().enumerate() {
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for bit in 0..8 {
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if (b & (1 << (7 - bit))) != 0 {
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sh1107.put_pixel(((i % 16) * 8 + bit) as u8, (i / 16) as u8, true);
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}
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}
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}
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}
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// safety: this function is safe to call because:
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// - `is_virtual` is `false` => data should be a physical buffer that is pre-populated with the transmit
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// data this is done by `copy_line_to_dma()`
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// - the `data` argument is a physical buffer slice, which is only used as a base/bounds argument
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unsafe {
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spim.tx_data_async_from_parts::<u16>(
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FB_WIDTH_WORDS * 2 - 1,
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// +1 for the trailing dummy bits
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next_free_line * FB_WIDTH_WORDS * 2 + 1,
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true,
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false,
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);
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}
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sh1107.buffer_swap();
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sh1107.draw();
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}
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