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Merge branch 'feature/optimize_lp_core_delay' into 'master'

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feat(lp_core): optimize ulp_lp_core_delay_X functions

See merge request espressif/esp-idf!49269
This commit is contained in:
Alexey Lapshin
2026-06-04 21:41:39 +04:00
parent 1a01778cfc 7bcf7dcbcf
commit a532acdb77
1 changed files with 6 additions and 2 deletions
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components/ulp/lp_core/lp_core/lp_core_utils.c
+6 -2
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@@ -112,10 +112,12 @@ void ulp_lp_core_delay_us(uint32_t us)
if (us == 0) { if (us == 0) {
return; return;
} }
uint32_t start = RV_READ_CSR(mcycle) - ULP_LP_CORE_DELAY_CALL_OVERHEAD_IN_CYCLES; uint32_t start = RV_READ_CSR(mcycle) - ULP_LP_CORE_DELAY_CALL_OVERHEAD_IN_CYCLES;
uint32_t req_delay = us * LP_CORE_CYCLES_PER_US_NUM / LP_CORE_CYCLES_PER_US_DENOM; uint32_t req_delay = us * LP_CORE_CYCLES_PER_US_NUM / LP_CORE_CYCLES_PER_US_DENOM;
uint32_t end = start + req_delay;
while ((uint32_t)(RV_READ_CSR(mcycle) - start) < req_delay) { while (RV_READ_CSR(mcycle) < end) {
/* busy wait */ /* busy wait */
} }
} }
@@ -132,7 +134,9 @@ void ulp_lp_core_delay_cycles(uint32_t cycles)
} }
uint32_t start = RV_READ_CSR(mcycle) - ULP_LP_CORE_DELAY_CALL_OVERHEAD_IN_CYCLES; uint32_t start = RV_READ_CSR(mcycle) - ULP_LP_CORE_DELAY_CALL_OVERHEAD_IN_CYCLES;
while ((uint32_t)(RV_READ_CSR(mcycle) - start) < cycles) { uint32_t end = start + cycles;
while (RV_READ_CSR(mcycle) < end) {
/* busy wait */ /* busy wait */
} }
} }