From 9c8f5a5e8f11e4a5012d55b96afae290242b8fdd Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Tue, 7 Dec 2021 20:14:23 +0100
Subject: fixed eve, spi start/stop interface

---
 fw/fe310/eos/eve/eve_eos.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 fw/fe310/eos/eve/eve_eos.c

(limited to 'fw/fe310/eos/eve/eve_eos.c')

diff --git a/fw/fe310/eos/eve/eve_eos.c b/fw/fe310/eos/eve/eve_eos.c
new file mode 100644
index 0000000..35c237e
--- /dev/null
+++ b/fw/fe310/eos/eve/eve_eos.c
@@ -0,0 +1,88 @@
+#include <stdlib.h>
+
+#include "platform.h"
+
+#include "eos.h"
+#include "interrupt.h"
+#include "event.h"
+#include "power.h"
+
+#include "board.h"
+
+#include "eve.h"
+#include "eve_eos.h"
+
+static int _run;
+
+static void handle_time(unsigned char type) {
+    if (_run) {
+        eve_spi_start();
+        eve_handle_time();
+        eve_spi_stop();
+    }
+}
+
+static void handle_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
+    if (_run) {
+        eve_spi_start();
+        eve_handle_intr();
+        eve_spi_stop();
+
+        GPIO_REG(GPIO_LOW_IE) |= (1 << EVE_PIN_INTR);
+    }
+}
+
+static void handle_intr(void) {
+    GPIO_REG(GPIO_LOW_IE) &= ~(1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_LOW_IP) = (1 << EVE_PIN_INTR);
+    eos_evtq_push_isr(EOS_EVT_UI | EVE_ETYPE_INTR, NULL, 0);
+}
+
+int eos_eve_init(uint8_t wakeup_cause, uint8_t gpio_dir, int touch_calibrate, uint32_t *touch_matrix) {
+    int rst = (wakeup_cause == EOS_PWR_WAKE_RST);
+    int rv;
+
+    if (rst) {
+        rv = eve_init(gpio_dir, touch_calibrate, touch_matrix);
+        if (rv) return EOS_ERR;
+    } else {
+        eve_active();
+    }
+
+    eos_evtq_set_handler(EOS_EVT_UI, handle_evt);
+    eos_timer_set_handler(EOS_TIMER_ETYPE_UI, handle_time);
+    eos_intr_set(INT_GPIO_BASE + EVE_PIN_INTR, IRQ_PRIORITY_UI, handle_intr);
+    eos_intr_disable(INT_GPIO_BASE + EVE_PIN_INTR);
+
+    return EOS_OK;
+}
+
+int eos_eve_run(uint8_t wakeup_cause) {
+    eos_eve_start();
+    eve_start_clk();
+
+    return EOS_OK;
+}
+
+void eos_eve_start(void) {
+    eve_start();
+
+    GPIO_REG(GPIO_INPUT_EN)     |=  (1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_OUTPUT_EN)    &= ~(1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_PULLUP_EN)    &= ~(1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_OUTPUT_XOR)   &= ~(1 << EVE_PIN_INTR);
+
+    GPIO_REG(GPIO_LOW_IE)       |=  (1 << EVE_PIN_INTR);
+
+    eos_intr_enable(INT_GPIO_BASE + EVE_PIN_INTR);
+    _run = 1;
+}
+
+void eos_eve_stop(void) {
+    _run = 0;
+    eos_intr_disable(INT_GPIO_BASE + EVE_PIN_INTR);
+
+    GPIO_REG(GPIO_LOW_IE)       &= ~(1 << EVE_PIN_INTR);
+
+    eve_stop();
+}
\ No newline at end of file
-- 
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