trezorhal: fix i2c, more reorg

Makefile.firmware

@@ -314,8 +314,9 @@ OBJ_MP += $(addprefix $(BUILD_MP)/,\
 OBJ_FW += $(addprefix $(BUILD_FW)/, \
 	firmware/main.o \
 	trezorhal/flash.o \
-	trezorhal/i2c.o \
 	trezorhal/rng.o \
+	trezorhal/sdcard.o \
+	trezorhal/touch.o \
 	trezorhal/usb.o \
 	trezorhal/stm32_it.o \
 	trezorhal/stm32_system.o \

micropython/bootloader/sdcard.h

@@ -1,42 +0,0 @@
-/*
- * This file is part of the Micro Python project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#ifndef __BOOTLOADER_SDCARD_H__
-#define __BOOTLOADER_SDCARD_H__
-
-#include <stdbool.h>
-
-// this is a fixed size and should not be changed
-#define SDCARD_BLOCK_SIZE (512)
-
-void sdcard_init(void);
-bool sdcard_is_present(void);
-bool sdcard_power_on(void);
-void sdcard_power_off(void);
-uint64_t sdcard_get_capacity_in_bytes(void);
-uint32_t sdcard_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks);
-
-#endif

micropython/extmod/modtrezormsg/modtrezormsg-stmhal.h

@@ -5,7 +5,8 @@
  * see LICENSE file for details
  */
 
-extern I2C_HandleTypeDef i2c_handle;
+#include "touch.h"
+
 extern struct _USBD_HandleTypeDef hUSBDDevice;
 extern uint8_t USBD_HID_SendReport(struct _USBD_HandleTypeDef *pdev, uint8_t *report, uint16_t len);
 extern int USBD_HID_Rx(uint8_t *buf, uint32_t len, uint32_t timeout);
@@ -31,23 +32,5 @@ ssize_t msg_send(uint8_t iface, const uint8_t *buf, size_t len)
 
 uint32_t msg_poll_touch(void)
 {
-    static uint8_t data[16], old_data[16];
-    if (HAL_OK != HAL_I2C_Master_Receive(&i2c_handle, 56 << 1, data, 16, 1)) {
-        return 0; // read failure
-    }
-    if (0 == memcmp(data, old_data, 16)) {
-        return 0; // no new event
-    }
-    uint32_t r = 0;
-    if (old_data[2] == 0 && data[2] == 1) {
-        r = 0x00010000 + (data[4] << 8) + data[6]; // touch start
-    } else
-    if (old_data[2] == 1 && data[2] == 1) {
-        r = 0x00020000 + (data[4] << 8) + data[6]; // touch move
-    }
-    if (old_data[2] == 1 && data[2] == 0) {
-        r = 0x00040000 + (data[4] << 8) + data[6]; // touch end
-    }
-    memcpy(old_data, data, 16);
-    return r;
+    return touch_read();
 }

micropython/firmware/main.c

@@ -13,13 +13,25 @@
 #include "gccollect.h"
 #include "pendsv.h"
 
+#include "flash.h"
+#include "rng.h"
+#include "sdcard.h"
+#include "touch.h"
+#include "usb.h"
+
 void SystemClock_Config(void);
 void USBD_CDC_TxAlways(const uint8_t * buf, uint32_t len);
 int USBD_CDC_Rx(uint8_t * buf, uint32_t len, uint32_t timeout);
 
-void flash_init(void);
-void usb_init(void);
-void i2c_init(void);
+// Errors
+
+void NORETURN nlr_jump_fail(void *val) {
+    for (;;) {}
+}
+
+void NORETURN __fatal_error(const char *msg) {
+    for (;;) {}
+}
 
 int main(void) {
 
@@ -49,11 +61,26 @@ int main(void) {
     RCC->CSR |= RCC_CSR_RMVF;
 
     pendsv_init();
-    flash_init();
-    usb_init();
-    i2c_init();
 
-    // TODO: sdcard
+    if (0 != flash_init()) {
+        __fatal_error("flash_init failed");
+    }
+
+    if (0 != rng_init()) {
+        __fatal_error("rng_init failed");
+    }
+
+    if (0 != sdcard_init()) {
+        __fatal_error("sdcard_init failed");
+    }
+
+    if (0 != touch_init()) {
+        __fatal_error("touch_init failed");
+    }
+
+    if (0 != usb_init()) {
+        __fatal_error("usb_init failed");
+    }
 
     for (;;) {
         // Stack limit should be less than real stack size, so we have a chance
@@ -80,16 +107,6 @@ int main(void) {
     return 0;
 }
 
-// Errors
-
-void NORETURN nlr_jump_fail(void *val) {
-    for (;;) {}
-}
-
-void NORETURN __fatal_error(const char *msg) {
-    for (;;) {}
-}
-
 #ifndef NDEBUG
 void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
     printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);

micropython/trezorhal/flash.c

@@ -1,11 +1,11 @@
 #include STM32_HAL_H
 
-void __fatal_error(const char *msg);
-
-void flash_init(void) {
+int flash_init(void) {
     // Enable the flash IRQ, which is used to also call our storage IRQ handler
     // It needs to go at a higher priority than all those components that rely on
     // the flash storage (eg higher than USB MSC).
     HAL_NVIC_SetPriority(FLASH_IRQn, 2, 0);
     HAL_NVIC_EnableIRQ(FLASH_IRQn);
+
+    return 0;
 }

micropython/trezorhal/flash.h

@@ -0,0 +1,6 @@
+#ifndef __TREZORHAL_FLASH_H__
+#define __TREZORHAL_FLASH_H__
+
+int flash_init(void);
+
+#endif

micropython/trezorhal/rng.c

@@ -5,19 +5,12 @@ static RNG_HandleTypeDef rng_handle = {
     .Instance = RNG,
 };
 
-void rng_init(RNG_HandleTypeDef *rng) {
-
-    // Enable RNG clock
+int rng_init(void) {
     __HAL_RCC_RNG_CLK_ENABLE();
-
-    // Init RNG handle
-    HAL_RNG_Init(rng);
+    HAL_RNG_Init(&rng_handle);
+    return 0;
 }
 
 uint32_t rng_get(void) {
-    if (rng_handle.State == HAL_RNG_STATE_RESET) {
-        rng_init(&rng_handle);
-    }
-
     return HAL_RNG_GetRandomNumber(&rng_handle);
 }

micropython/trezorhal/rng.h

@@ -0,0 +1,7 @@
+#ifndef __TREZORHAL_RNG_H__
+#define __TREZORHAL_RNG_H__
+
+int rng_init(void);
+uint32_t rng_get(void);
+
+#endif

micropython/trezorhal/sdcard.c

@@ -1,29 +1,3 @@
-/*
- * This file is part of the Micro Python project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
 #include STM32_HAL_H
 
 #include <string.h>
@@ -35,7 +9,7 @@
 
 static SD_HandleTypeDef sd_handle;
 
-void sdcard_init(void) {
+int sdcard_init(void) {
     // invalidate the sd_handle
     sd_handle.Instance = NULL;
 
@@ -57,6 +31,8 @@ void sdcard_init(void) {
     GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
     GPIO_InitStructure.Pin = GPIO_PIN_13;
     HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+    return 0;
 }
 
 void HAL_SD_MspInit(SD_HandleTypeDef *hsd) {

micropython/trezorhal/sdcard.h

@@ -0,0 +1,16 @@
+#ifndef __TREZORHAL_SDCARD_H__
+#define __TREZORHAL_SDCARD_H__
+
+#include <stdbool.h>
+
+// this is a fixed size and should not be changed
+#define SDCARD_BLOCK_SIZE (512)
+
+int sdcard_init(void);
+bool sdcard_is_present(void);
+bool sdcard_power_on(void);
+void sdcard_power_off(void);
+uint64_t sdcard_get_capacity_in_bytes(void);
+uint32_t sdcard_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks);
+
+#endif

micropython/trezorhal/touch.c

@@ -1,14 +1,18 @@
 #include STM32_HAL_H
 
-I2C_HandleTypeDef i2c_handle;
+#include <string.h>
 
-void __fatal_error(const char *msg);
+I2C_HandleTypeDef i2c_handle = {
+    .Instance = I2C1,
+};
 
-void i2c_init(void) {
+int touch_init(void) {
 
     // Enable I2C clock
     __HAL_RCC_I2C1_CLK_ENABLE();
 
+    __I2C1_CLK_ENABLE();
+
     // Init SCL and SDA GPIO lines (PB6 & PB7)
     GPIO_InitTypeDef GPIO_InitStructure = {
         .Pin = GPIO_PIN_6 | GPIO_PIN_7,
@@ -31,11 +35,34 @@ void i2c_init(void) {
 
     // Init I2C handle
     if (HAL_I2C_Init(&i2c_handle) != HAL_OK) {
-        __fatal_error("i2c_init failed");
-        return;
+        return 1;
     }
 
     // Enable IRQs
     HAL_NVIC_EnableIRQ(I2C1_EV_IRQn);
     HAL_NVIC_EnableIRQ(I2C1_ER_IRQn);
+
+    return 0;
+}
+
+uint32_t touch_read(void) {
+    static uint8_t data[16], old_data[16];
+    if (HAL_OK != HAL_I2C_Master_Receive(&i2c_handle, 56 << 1, data, 16, 1)) {
+        return 0; // read failure
+    }
+    if (0 == memcmp(data, old_data, 16)) {
+        return 0; // no new event
+    }
+    uint32_t r = 0;
+    if (old_data[2] == 0 && data[2] == 1) {
+        r = 0x00010000 + (data[4] << 8) + data[6]; // touch start
+    } else
+    if (old_data[2] == 1 && data[2] == 1) {
+        r = 0x00020000 + (data[4] << 8) + data[6]; // touch move
+    }
+    if (old_data[2] == 1 && data[2] == 0) {
+        r = 0x00040000 + (data[4] << 8) + data[6]; // touch end
+    }
+    memcpy(old_data, data, 16);
+    return r;
 }

micropython/trezorhal/touch.h

@@ -0,0 +1,7 @@
+#ifndef __TREZORHAL_TOUCH_H__
+#define __TREZORHAL_TOUCH_H__
+
+int touch_init(void);
+uint32_t touch_read(void);
+
+#endif

micropython/trezorhal/usb.c

@@ -8,9 +8,7 @@
 
 USBD_HandleTypeDef hUSBDDevice;
 
-void __fatal_error(const char *msg);
-
-void usb_init(void) {
+int usb_init(void) {
     const uint16_t vid = 0x1209;
     const uint16_t pid = 0x53C1;
 
@@ -25,12 +23,13 @@ void usb_init(void) {
 
     USBD_SetVIDPIDRelease(vid, pid, 0x0200, 0);
     if (USBD_SelectMode(USBD_MODE_CDC_HID, &hid_info) != 0) {
-        __fatal_error("USB init failed");
-        return;
+        return 1;
     }
     USBD_Init(&hUSBDDevice, (USBD_DescriptorsTypeDef*)&USBD_Descriptors, 0); // 0 == full speed
     USBD_RegisterClass(&hUSBDDevice, &USBD_CDC_MSC_HID);
     USBD_CDC_RegisterInterface(&hUSBDDevice, (USBD_CDC_ItfTypeDef*)&USBD_CDC_fops);
     USBD_HID_RegisterInterface(&hUSBDDevice, (USBD_HID_ItfTypeDef*)&USBD_HID_fops);
     USBD_Start(&hUSBDDevice);
+
+    return 0;
 }

micropython/trezorhal/usb.h

@@ -0,0 +1,6 @@
+#ifndef __TREZORHAL_USB_H__
+#define __TREZORHAL_USB_H__
+
+int usb_init(void);
+
+#endif