Espressif ESP32 Technical Reference Manual page 671

30 ULP Coprocessor (ULP)
Operand Description - see Figure
Step Relative shift from current position, expressed in 32-bit words:
if Step[7] = 0 then PC = PC + Step[6:0]
if Step[7] = 1 then PC = PC - Step[6:0]
Threshold Threshold value for condition (see Cond below) to jump
Cond Condition to jump:
0 - jump if R0 < Threshold
1 - jump if R0 >= Threshold
Description
The instruction prompts a jump to a relative address, if the above-mentioned condition is true. The condition
itself is the result of comparing the R0 register value and the Threshold value.
Note:
All jump addresses are expressed in 32-bit words.
30.4.6 JUMPS – Jump to a Relative Address (Conditional upon Stage Count Register)
31 28 27
4'd8 3'b2
Operand Description - see Figure
Step Relative shift from current position, expressed in 32-bit words:
if Step[7] = 0, then PC = PC + Step[6:0]
if Step[7] = 1, then PC = PC - Step[6:0]
Threshold Threshold value for condition (see Cond below) to jump
Cond Condition of jump:
1X - jump if Stage_cnt <= Threshold
00 - jump if Stage_cnt < Threshold
01 - jump if Stage_cnt >= Threshold
Note:
• A description of how to set the stage count register is provided in section 30.4.1.3.
• All jump addresses are expressed in 32-bit words.
Description
The instruction prompts a jump to a relative address if the above-mentioned condition is true. The condition
itself is the result of comparing the value of Stage_cnt (stage count register) and the Threshold value.
30.4.7 HALT – End the Program
31 28
4'd11
Description
The instruction ends the operation of the processor and puts it into power-down mode.
Espressif Systems
30-9
25 24 17
Step
Figure 30-10. Instruction Type — JUMP
30-10
Figure 30-11. Instruction Type — HALT
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16 15
Cond
671
7 0
Threshold
0
ESP32 TRM (Version 5.2)