From 492fd5cb6b8fcb8c88f238b20c28ca0bb2a1a84c Mon Sep 17 00:00:00 2001
From: Josef Gajdusek <atx@atx.name>
Date: Fri, 15 May 2015 09:56:41 +0200
Subject: [PATCH] esp8266: Enable setting CPU frequency to 160MHz
---
esp8266/esp_mphal.c | 4 ----
esp8266/etshal.h | 1 -
esp8266/modpyb.c | 10 ++++++++--
3 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/esp8266/esp_mphal.c b/esp8266/esp_mphal.c
index 8eb8cc8ca..736cf3b0a 100644
--- a/esp8266/esp_mphal.c
+++ b/esp8266/esp_mphal.c
@@ -93,7 +93,3 @@ void HAL_Delay(uint32_t Delay) {
void mp_hal_set_interrupt_char(int c) {
// TODO
}
-
-uint32_t mp_hal_get_cpu_freq(void) {
- return ets_get_cpu_frequency();
-}
diff --git a/esp8266/etshal.h b/esp8266/etshal.h
index 5ee67d027..61d8399db 100644
--- a/esp8266/etshal.h
+++ b/esp8266/etshal.h
@@ -5,6 +5,5 @@ void ets_isr_unmask();
void ets_install_putc1();
void ets_isr_attach();
void uart_div_modify();
-uint32_t ets_get_cpu_frequency();
#endif // _INCLUDED_ETSHAL_H_
diff --git a/esp8266/modpyb.c b/esp8266/modpyb.c
index 5d57317b7..f02de9e30 100644
--- a/esp8266/modpyb.c
+++ b/esp8266/modpyb.c
@@ -81,10 +81,16 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_info_obj, 0, 1, pyb_info);
STATIC mp_obj_t pyb_freq(mp_uint_t n_args, const mp_obj_t *args) {
if (n_args == 0) {
// get
- return mp_obj_new_int(mp_hal_get_cpu_freq() * 1000000);
+ return mp_obj_new_int(system_get_cpu_freq() * 1000000);
} else {
// set
- nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "can't change freq"));
+ mp_int_t freq = mp_obj_get_int(args[0]) / 1000000;
+ if (freq != 80 && freq != 160) {
+ nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
+ "frequency can only be either 80Mhz or 160MHz"));
+ }
+ system_update_cpu_freq(freq);
+ return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_freq_obj, 0, 1, pyb_freq);
--
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