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reset error latch at startup

pull/1/head
Sebastien Bourdeauducq 2017-05-06 21:48:04 +08:00
parent 0cb8d0c53d
commit 15c9bafb51
1 changed files with 26 additions and 8 deletions
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34
firmware/src/main.rs
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@ -44,11 +44,13 @@ const IC_ADC: u8 = 0x08; // PE3
const FBV_ADC: u8 = 0x20; // PD5
const AV_ADC: u8 = 0x40; // PD6
const FV_ERRN: u8 = 0x01; // PL0
const FBV_ERRN: u8 = 0x02; // PL1
const FBI_ERRN: u8 = 0x04; // PL2
const AV_ERRN: u8 = 0x08; // PL3
const AI_ERRN: u8 = 0x10; // PL4
const FV_ERRN: u8 = 0x01; // PL0
const FBV_ERRN: u8 = 0x02; // PL1
const FBI_ERRN: u8 = 0x04; // PL2
const AV_ERRN: u8 = 0x08; // PL3
const AI_ERRN: u8 = 0x10; // PL4
const ERR_LATCHN: u8 = 0x20; // PL5
const ERR_RESN: u8 = 0x01; // PQ0
const PWM_LOAD: u16 = (/*pwmclk*/16_000_000u32 / /*freq*/100_000) as u16;
const ADC_TIMER_LOAD: u32 = /*timerclk*/16_000_000 / /*freq*/100;
@ -107,6 +109,16 @@ fn set_emission_range(range: EmissionRange) {
});
}
fn error_reset() {
cortex_m::interrupt::free(|cs| {
let gpio_l = tm4c129x::GPIO_PORTL.borrow(cs);
let gpio_q = tm4c129x::GPIO_PORTQ.borrow(cs);
gpio_q.data.modify(|r, w| w.data().bits(r.data().bits() & !ERR_RESN));
while gpio_l.data.read().bits() as u8 & ERR_LATCHN == 0 {}
gpio_q.data.modify(|r, w| w.data().bits(r.data().bits() | ERR_RESN));
});
}
fn main() {
cortex_m::interrupt::free(|cs| {
@ -119,7 +131,7 @@ fn main() {
systick.enable_counter();
systick.enable_interrupt();
// Bring up GPIO ports D, E, F, G, K, L, P
// Bring up GPIO ports D, E, F, G, K, L, P, Q
sysctl.rcgcgpio.modify(|_, w| {
w.r3().bit(true)
.r4().bit(true)
@ -128,6 +140,7 @@ fn main() {
.r9().bit(true)
.r10().bit(true)
.r13().bit(true)
.r14().bit(true)
});
while !sysctl.prgpio.read().r3().bit() {}
while !sysctl.prgpio.read().r4().bit() {}
@ -136,6 +149,7 @@ fn main() {
while !sysctl.prgpio.read().r9().bit() {}
while !sysctl.prgpio.read().r10().bit() {}
while !sysctl.prgpio.read().r13().bit() {}
while !sysctl.prgpio.read().r14().bit() {}
// Set up LEDs
let gpio_k = tm4c129x::GPIO_PORTK.borrow(cs);
@ -147,10 +161,14 @@ fn main() {
gpio_p.dir.write(|w| w.dir().bits(0b111111));
gpio_p.den.write(|w| w.den().bits(0b111111));
// Set up error input pins
// Set up error pins
let gpio_l = tm4c129x::GPIO_PORTL.borrow(cs);
let gpio_q = tm4c129x::GPIO_PORTQ.borrow(cs);
gpio_l.pur.write(|w| w.pue().bits(FV_ERRN|FBV_ERRN|FBI_ERRN|AV_ERRN|AI_ERRN));
gpio_l.den.write(|w| w.den().bits(FV_ERRN|FBV_ERRN|FBI_ERRN|AV_ERRN|AI_ERRN));
gpio_l.den.write(|w| w.den().bits(FV_ERRN|FBV_ERRN|FBI_ERRN|AV_ERRN|AI_ERRN|ERR_LATCHN));
gpio_q.dir.write(|w| w.dir().bits(ERR_RESN));
gpio_q.den.write(|w| w.den().bits(ERR_RESN));
error_reset();
// Set up PWMs
let gpio_f = tm4c129x::GPIO_PORTF_AHB.borrow(cs);