Add constants for Winbond flash memory

imxrt-rs · Feb 17, 2020 · 5ca4d1a · 5ca4d1a
1 parent 9e160c8
commit 5ca4d1a
Showing 1 changed file with 19 additions and 6 deletions.
diff --git a/tests/teensy4.rs b/tests/teensy4.rs
@@ -3,12 +3,25 @@
 use imxrt_boot_gen::serial_flash::opcodes::sdr::*;
 use imxrt_boot_gen::serial_flash::*;
 
+/// Instructions for the Winbond W25Q16JV
+/// SPI flash memory controller
+mod winbond {
+    pub const FAST_READ_QUAD_IO: u8 = 0xEB;
+    pub const READ_STATUS_REGISTER_1: u8 = 0x05;
+    pub const WRITE_ENABLE: u8 = 0x06;
+    pub const SECTOR_ERASE: u8 = 0x20;
+    pub const PAGE_PROGRAM: u8 = 0x02;
+    pub const CHIP_ERASE: u8 = 0x60;
+}
+
+use winbond::*;
+
 //
 // Sequences for lookup table
 //
 
 const SEQ_READ: Sequence = Sequence([
-    Instr::new(CMD, Pads::One, 0xEB),
+    Instr::new(CMD, Pads::One, FAST_READ_QUAD_IO),
     Instr::new(RADDR, Pads::Four, 0x18),
     Instr::new(DUMMY, Pads::Four, 0x06),
     Instr::new(READ, Pads::Four, 0x04),
@@ -19,7 +32,7 @@ const SEQ_READ: Sequence = Sequence([
 ]);
 
 const SEQ_READ_STATUS: Sequence = Sequence([
-    Instr::new(CMD, Pads::One, 0x05),
+    Instr::new(CMD, Pads::One, READ_STATUS_REGISTER_1),
     Instr::new(READ, Pads::One, 0x04),
     STOP,
     STOP,
@@ -30,7 +43,7 @@ const SEQ_READ_STATUS: Sequence = Sequence([
 ]);
 
 const SEQ_WRITE_ENABLE: Sequence = Sequence([
-    Instr::new(CMD, Pads::One, 0x06),
+    Instr::new(CMD, Pads::One, WRITE_ENABLE),
     STOP,
     STOP,
     STOP,
@@ -41,7 +54,7 @@ const SEQ_WRITE_ENABLE: Sequence = Sequence([
 ]);
 
 const SEQ_ERASE_SECTOR: Sequence = Sequence([
-    Instr::new(CMD, Pads::One, 0x20),
+    Instr::new(CMD, Pads::One, SECTOR_ERASE),
     Instr::new(RADDR, Pads::One, 0x18),
     STOP,
     STOP,
@@ -52,7 +65,7 @@ const SEQ_ERASE_SECTOR: Sequence = Sequence([
 ]);
 
 const SEQ_PAGE_PROGRAM: Sequence = Sequence([
-    Instr::new(CMD, Pads::One, 0x02),
+    Instr::new(CMD, Pads::One, PAGE_PROGRAM),
     Instr::new(RADDR, Pads::One, 0x18),
     Instr::new(WRITE, Pads::One, 0x04),
     STOP,
@@ -63,7 +76,7 @@ const SEQ_PAGE_PROGRAM: Sequence = Sequence([
 ]);
 
 const SEQ_CHIP_ERASE: Sequence = Sequence([
-    Instr::new(CMD, Pads::One, 0x60),
+    Instr::new(CMD, Pads::One, CHIP_ERASE),
     STOP,
     STOP,
     STOP,