Espressif ESP32-S2 Programming Manual page 1495

Chapter 4. API Guides
1: ST32 R1, R2, 0x12,
Label[1:0],Rsrc[15:0]}
→
2: .data
Addr1: .word
.set
.text
MOVE
MOVE
ST32
Rsrc[15:0]}
→
STI32 –Store 32-bits data to the 32-bits memory with auto increment of adress offset
Syntax STI32 Rsrc, Rdst, Label
Operands
• Rsrc –Register R[0..3], holds the 16-bit value to store
• Rdst –Register R[0..3], address of the destination, in 32-bit words
• Label –2-bit user defined unsigned value
Cycles 4 cycles to execute, 4 cycles to fetch next instruction
Description The instruction stores 11 bits of the PC value, label value and the 16-bit value of Rsrc to the 32-bits
memory with address Rdst+offset:
Mem[Rdst + offset
Where offset value set by STO instruction
Examples:
1: STO 0x12
STI32 R1, R2,
Rsrc[15:0]}
→
STI32 R1, R2,
Rsrc[15:0]}
→
2: .data
Addr1: .word
.set
.text
MOVE
MOVE
STO
STI32
Rsrc[15:0]}
→
ST32
Rsrc[15:0]}
→
LDL/LD –Load data from low part of the 32-bits memory
Syntax LD Rdst, Rsrc, offset LDL Rdst, Rsrc, offset
Operands Rdst –Register R[0..3], destination
Rsrc –Register R[0..3], holds address of destination, in 32-bit words
Offset –13-bit signed value, offset in bytes
Cycles 4 cycles to execute, 4 cycles to fetch next instruction
Description The instruction loads lower 16-bit half-word from memory with address Rsrc+offset into the destination
register Rdst:
Espressif Systems
0 //MEM[R2+0x12][31:0]
//Data section definition
123 // Define label Addr1
offs, 0x00 // Define constant offs
//Text section definition
R1, 1 // R1
R2, Addr1 // R2
R1, R2, offs,1// MEM[R2
// MEM[Addr1
/ 4]{31:0} = {PC[10:0],0[2:0],Label[1:0],Rsrc[15:0]}
0 //MEM[R2+0x12][31:0]
0 //MEM[R2+0x13][31:0]
//Data section definition
123 // Define label Addr1
offs, 0x00 // Define constant offs
//Text section definition
R1, 1 // R1
R2, Addr1 // R2
offs
R1, R2, 1// MEM[R2 +
// MEM[Addr1
R1, R2, 1// MEM[R2 +
// MEM[Addr1
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= {PC[10:0],0[2:0],
16 bit
= 1
= Addr1
+ 0] = {PC[10:0],0[2:0],Label[1:0],
+ 0] will be
= {PC[10:0],0[2:0],Label[1:0],
= {PC[10:0],0[2:0],Label[1:0],
16 bit
= 1
= Addr1
0] = {PC[10:0],0[2:0],Label[1:0],
+ 0] will be
1] = {PC[10:0],0[2:0],Label[1:0],
+ 1] will be
1484
32'h00010001
32'h00010001
32'h00010001
Release v4.4