stm32f0: Remove hal based stm32f0 implementation

Signed-off-by: Eug Krashtan <eug.krashtan@gmail.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 0 insertions, 85 deletions

diff --git a/src/stm32f0/spi.c b/src/stm32f0/spi.c
deleted file mode 100644
index 1c8a3b77..00000000
--- a/src/stm32f0/spi.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- *  SPI support on STM32F0 - without HAL for space saving
- *
- *  Copyright (C) 2019 Eug Krashtan <eug.krashtan@gmail.com>
- *  This file may be distributed under the terms of the GNU GPLv3 license.
- *
- */
-
-#include <string.h> // memcpy
-#include "stm32f0xx_hal.h"
-#include "command.h" // shutdown
-#include "board/gpio.h" // spi_setup
-#include "sched.h" // sched_shutdown
-#include "log.h"
-
-void spi_hw_setup(uint32_t rate)
-{
-    GPIO_InitTypeDef GPIO_InitStruct = {0};
-
-    /* SPI1 init - no HAL */
-    __HAL_RCC_SPI1_CLK_ENABLE();
-    __HAL_RCC_GPIOA_CLK_ENABLE();
-
-    /**SPI1 GPIO Configuration
-    PA5     ------> SPI1_SCK
-    PA6     ------> SPI1_MISO
-    PA7     ------> SPI1_MOSI
-    */
-    GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
-    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
-    GPIO_InitStruct.Alternate = GPIO_AF0_SPI1;
-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
-    if (rate > 800000) {
-        SPI1->CR1 = SPI_BAUDRATEPRESCALER_64;
-    } else {
-        SPI1->CR1 = SPI_BAUDRATEPRESCALER_256;
-    }
-
-    SPI1->CR1 |= SPI_MODE_MASTER | SPI_DIRECTION_2LINES | SPI_CR1_SSM |
-            SPI_POLARITY_LOW | SPI_PHASE_1EDGE |
-            SPI_FIRSTBIT_MSB | SPI_CRCCALCULATION_DISABLE;
-
-    SPI1->CR2 =  SPI_NSS_PULSE_DISABLE | SPI_DATASIZE_8BIT |
-            SPI_RXFIFO_THRESHOLD_QF;
-
-    SPI1->CR1 |= SPI_CR1_SPE; // Enable
-}
-
-struct spi_config
-spi_setup(uint32_t bus, uint8_t mode, uint32_t rate)
-{
-    if (bus > 0 || !rate)
-        shutdown("Invalid spi_setup parameters");
-
-    spi_hw_setup(rate);
-    return (struct spi_config){ .cfg = SPI1->CR1 };
-}
-
-void
-spi_prepare(struct spi_config config)
-{
-    SPI1->CR1 = config.cfg;
-}
-
-void
-spi_transfer(struct spi_config config, uint8_t receive_data,
-             uint8_t len, uint8_t *data)
-{
-    uint8_t rxptr = 0;
-    while (rxptr<len) {
-        while(!(SPI1->SR & SPI_SR_TXE));
-        __DMB();
-        *((uint8_t*)&(SPI1->DR)) = data[rxptr]; // Hack with pointers
-        // to write/read only 8 bits from 16-bit DR (see errata)
-        while(!(SPI1->SR & SPI_SR_RXNE));
-        __DMB();
-        if(receive_data) {
-            data[rxptr] = *((uint8_t*)&(SPI1->DR));
-        }
-        rxptr ++;
-    }
-}