From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Sun, 5 Jan 2020 18:18:26 +0000 (+0100)
Subject: application: Set up pins for the MX25L flash memory.
X-Git-Url: http://git.code-monkey.de/?p=gps-watch.git;a=commitdiff_plain;h=b6b84d79c9da6f52e1f7ba4d2bac55acd340f06d

application: Set up pins for the MX25L flash memory.

This configures SPI0 as well as the GPIO used as the flash's
chip select line.
---

diff --git a/src/application/main.rs b/src/application/main.rs
index 92429e5..8f7bd6d 100644
--- a/src/application/main.rs
+++ b/src/application/main.rs
@@ -36,6 +36,7 @@ use common::port;
 use common::gpio;
 use common::nvic;
 use common::i2c;
+use common::spi;
 use common::uart;
 use common::usb_serial;
 use common::display;
@@ -104,6 +105,20 @@ pub unsafe extern "C" fn _start() -> ! {
     gpio::set_direction(gpio::GPIOB, 1 << 16, gpio::Direction::Output);
     port::set_af(port::PORTB, 16, 1);
 
+    // Configure pin for the MX25L's chip select line.
+    gpio::set_direction(gpio::GPIOD, 1 << 0, gpio::Direction::Output);
+    port::set_af(port::PORTD, 0, 1);
+    gpio::set(gpio::GPIOD, 1 << 0);
+
+    // Configure pins for SPI0.
+    port::set_af(port::PORTD, 1, 2);
+    port::set_af(port::PORTD, 2, 5);
+    port::set_af(port::PORTD, 3, 5);
+
+    spi::configure(spi::SPI0);
+
+    nvic::disable_irq(10); // SPI0
+
     // Configure pins for UART0.
     port::set_af(port::PORTE, 20, 4);
     port::set_af(port::PORTE, 21, 4);