forked from M-Labs/artiq-zynq
SD reader: optimized stack and binary size
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2b1b0dc49f
commit
a55a6291a4
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@ -14,7 +14,7 @@ num-traits = { version = "0.2", default-features = false }
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num-derive = "0.3"
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cslice = "0.3"
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log = "0.4"
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core_io = { version = "0.1", features = ["alloc", "collections"] }
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core_io = { version = "0.1", features = ["collections"] }
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byteorder = { version = "1.3", default-features = false }
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void = { version = "1", default-features = false }
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futures = { version = "0.3", default-features = false, features = ["async-await"] }
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@ -24,4 +24,4 @@ libsupport_zynq = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
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libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
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libasync = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
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dyld = { path = "../libdyld" }
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fatfs = { version = "0.3", features = ["core_io", "alloc"], default-features = false }
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fatfs = { version = "0.3", features = ["core_io"], default-features = false }
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@ -2,6 +2,7 @@ use core_io::{BufRead, Error, ErrorKind, Read, Result as IoResult, Seek, SeekFro
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use fatfs;
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use libboard_zynq::sdio::{sd_card::SdCard, CmdTransferError};
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use log::debug;
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use alloc::vec::Vec;
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fn cmd_error_to_io_error(_: CmdTransferError) -> Error {
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Error::new(ErrorKind::Other, "Command transfer error")
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@ -19,7 +20,7 @@ pub struct SdReader {
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/// Internal SdCard handle.
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sd: SdCard,
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/// Read buffer with the size of 1 block.
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buffer: [u8; BLOCK_SIZE],
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buffer: Vec<u8>,
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/// Address for the next byte.
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byte_addr: u32,
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/// Internal index for the next byte.
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@ -47,9 +48,13 @@ pub enum PartitionEntry {
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impl SdReader {
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/// Create SdReader from SdCard
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pub fn new(sd: SdCard) -> SdReader {
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let mut vec: Vec<u8> = Vec::with_capacity(BLOCK_SIZE);
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unsafe {
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vec.set_len(vec.capacity());
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}
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SdReader {
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sd,
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buffer: [0; BLOCK_SIZE],
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buffer: vec,
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byte_addr: 0,
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index: BLOCK_SIZE,
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dirty: false,
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