diff options
Diffstat (limited to 'firmware/target/arm/s5l8702/ipod6g/piezo-ipod6g.c')
-rw-r--r-- | firmware/target/arm/s5l8702/ipod6g/piezo-ipod6g.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/firmware/target/arm/s5l8702/ipod6g/piezo-ipod6g.c b/firmware/target/arm/s5l8702/ipod6g/piezo-ipod6g.c index f3c00e34c5..06735673be 100644 --- a/firmware/target/arm/s5l8702/ipod6g/piezo-ipod6g.c +++ b/firmware/target/arm/s5l8702/ipod6g/piezo-ipod6g.c | |||
@@ -95,3 +95,31 @@ void piezo_button_beep(bool beep, bool force) | |||
95 | piezo_start(40, 4); | 95 | piezo_start(40, 4); |
96 | } | 96 | } |
97 | } | 97 | } |
98 | |||
99 | #ifdef BOOTLOADER | ||
100 | void piezo_tone(uint32_t period /*uS*/, int32_t duration /*ms*/) | ||
101 | { | ||
102 | int32_t stop = USEC_TIMER + duration*1000; | ||
103 | uint32_t level = 0; | ||
104 | |||
105 | while ((int32_t)USEC_TIMER - stop < 0) | ||
106 | { | ||
107 | level ^= 1; | ||
108 | GPIOCMD = 0x0060e | level; | ||
109 | udelay(period >> 1); | ||
110 | } | ||
111 | |||
112 | GPIOCMD = 0x0060e; | ||
113 | } | ||
114 | |||
115 | void piezo_seq(uint16_t *seq) | ||
116 | { | ||
117 | uint16_t period; | ||
118 | |||
119 | while ((period = *seq++) != 0) | ||
120 | { | ||
121 | piezo_tone(period, *seq++); | ||
122 | udelay(*seq++ * 1000); | ||
123 | } | ||
124 | } | ||
125 | #endif | ||