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feat(lp_core): optimize ulp_lp_core_delay_X functions

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This commit is contained in:
Alexey Lapshin
2026-06-03 13:31:36 +07:00
parent 424a685692
commit 7bcf7dcbcf
1 changed files with 6 additions and 2 deletions
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8
components/ulp/lp_core/lp_core/lp_core_utils.c
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@@ -112,10 +112,12 @@ void ulp_lp_core_delay_us(uint32_t us)
if (us == 0) {
return;
}
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 end = start + req_delay;
while ((uint32_t)(RV_READ_CSR(mcycle) - start) < req_delay) {
while (RV_READ_CSR(mcycle) < end) {
/* 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;
while ((uint32_t)(RV_READ_CSR(mcycle) - start) < cycles) {
uint32_t end = start + cycles;
while (RV_READ_CSR(mcycle) < end) {
/* busy wait */
}
}