moved stm32 into directory added noddy pcb

1 files changed, 0 insertions, 360 deletions

diff --git a/app/i2c_hw.c b/app/i2c_hw.c
deleted file mode 100644
index a17c564..0000000
--- a/app/i2c_hw.c
+++ /dev/null
@@ -1,360 +0,0 @@
-#include "project.h"
-
-
-#define SCL1  GPIO6
-#define SDA1  GPIO7
-#define SCL1_PORT GPIOB
-#define SDA1_PORT GPIOB
-
-#define SCL2  GPIO10
-#define SDA2  GPIO11
-#define SCL2_PORT GPIOB
-#define SDA2_PORT GPIOB
-
-void
-i2c_clear_start (uint32_t i2c)
-{
-  I2C_CR1 (i2c) &= ~ (uint32_t) I2C_CR1_START;
-}
-
-
-int
-i2cp_start (uint32_t i2c)
-{
-  uint32_t timeout = 1000;
-  i2c_send_start (i2c);
-
-  while (! ((I2C_SR1 (i2c) & I2C_SR1_SB)
-            & (I2C_SR2 (i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY))) && (timeout--));
-
-  return timeout ? 0 : -1;
-}
-
-void
-i2cp_abort_start (uint32_t i2c)
-{
-  i2c_clear_start (i2c);
-  delay_us (10);
-}
-
-void
-i2cp_stop (uint32_t i2c)
-{
-  i2c_send_stop (i2c);
-}
-
-
-void
-i2cp_abort_stop (uint32_t i2c)
-{
-  i2c_clear_stop (i2c);
-  delay_us (10);
-}
-
-int
-i2cp_send (uint32_t i2c, uint8_t v)
-{
-  uint32_t reg;
-  uint32_t timeout = 1000;
-
-  i2c_send_data (i2c, v);
-
-  while (!
-         ((reg =
-             I2C_SR1 (i2c)) & (I2C_SR1_BTF | I2C_SR1_BERR | I2C_SR1_ARLO |
-                               I2C_SR1_AF | I2C_SR1_PECERR | I2C_SR1_TIMEOUT |
-                               I2C_SR1_SMBALERT)) && (timeout--));
-
-  I2C_SR1 (i2c) =
-    reg & ~ (I2C_SR1_BERR | I2C_SR1_ARLO | I2C_SR1_AF | I2C_SR1_PECERR |
-             I2C_SR1_TIMEOUT | I2C_SR1_SMBALERT);
-
-  if (!timeout)
-    return 1;
-
-
-  return (reg & I2C_SR1_BTF) ? 0 : -1;
-}
-
-/*0 on success 1 on failure*/
-int
-i2cp_start_transaction (uint32_t i2c, uint8_t a, int wnr)
-{
-  uint32_t reg;
-  uint32_t __attribute__ ((unused)) dummy;
-  uint32_t timeout = 1000;
-
-  i2c_send_start (i2c);
-
-  while (! ((I2C_SR1 (i2c) & I2C_SR1_SB)
-            & (I2C_SR2 (i2c) & (I2C_SR2_MSL | I2C_SR2_BUSY))) && (timeout--));
-
-  if (!timeout)
-    return -1;
-
-  i2c_send_7bit_address (i2c, a, wnr);
-
-  while (!
-         ((reg =
-             I2C_SR1 (i2c)) & (I2C_SR1_ADDR | I2C_SR1_BERR | I2C_SR1_ARLO |
-                               I2C_SR1_AF | I2C_SR1_PECERR | I2C_SR1_TIMEOUT |
-                               I2C_SR1_SMBALERT)) && (timeout--));
-
-  if (!timeout)
-    return -1;
-
-  dummy = I2C_SR2 (i2c);
-
-  I2C_SR1 (i2c) =
-    reg & ~ (I2C_SR1_BERR | I2C_SR1_ARLO | I2C_SR1_AF | I2C_SR1_PECERR |
-             I2C_SR1_TIMEOUT | I2C_SR1_SMBALERT);
-
-
-  return (reg == 0x82) ? 0 : -1;
-}
-
-
-/*This is stupid, it bit bangs a dummy transaction to get the host i2c controller back in the game */
-void
-i2cp1_reset_sm (void)
-{
-  int i;
-
-  MAP_OUTPUT_PP (SCL1);
-  MAP_OUTPUT_PP (SDA1);
-
-  SET (SDA1);
-  SET (SCL1);
-  delay_us (10);
-  CLEAR (SDA1);
-  delay_us (10);
-  CLEAR (SCL1);
-
-  for (i = 0; i < 9; ++i) {
-    delay_us (10);
-    SET (SCL1);
-    delay_us (10);
-    CLEAR (SCL1);
-    delay_us (10);
-  }
-
-  SET (SCL1);
-  delay_us (10);
-  SET (SDA1);
-  delay_us (10);
-
-  MAP_AF_OD (SCL1);
-  MAP_AF_OD (SDA1);
-
-}
-
-void
-i2cp2_reset_sm (void)
-{
-  int i;
-
-  MAP_OUTPUT_PP (SCL2);
-  MAP_OUTPUT_PP (SDA2);
-
-  SET (SDA2);
-  SET (SCL2);
-  delay_us (10);
-  CLEAR (SDA2);
-  delay_us (10);
-  CLEAR (SCL2);
-
-  for (i = 0; i < 9; ++i) {
-    delay_us (10);
-    SET (SCL2);
-    delay_us (10);
-    CLEAR (SCL2);
-    delay_us (10);
-  }
-
-  SET (SCL2);
-  delay_us (10);
-  SET (SDA2);
-  delay_us (10);
-
-  MAP_AF_OD (SCL2);
-  MAP_AF_OD (SDA2);
-
-}
-
-
-
-void
-i2cp1_start_dma (uint8_t *buf, int len)
-{
-  dma_channel_reset (DMA1, DMA_CHANNEL6);
-  dma_set_peripheral_address (DMA1, DMA_CHANNEL6, (uint32_t) & I2C1_DR);
-  dma_set_memory_address (DMA1, DMA_CHANNEL6, (uint32_t) buf);
-  dma_set_number_of_data (DMA1, DMA_CHANNEL6, len);
-  dma_set_read_from_memory (DMA1, DMA_CHANNEL6);
-  dma_enable_memory_increment_mode (DMA1, DMA_CHANNEL6);
-  dma_set_peripheral_size (DMA1, DMA_CHANNEL6, DMA_CCR_PSIZE_8BIT);
-  dma_set_memory_size (DMA1, DMA_CHANNEL6, DMA_CCR_MSIZE_8BIT);
-  dma_set_priority (DMA1, DMA_CHANNEL6, DMA_CCR_PL_MEDIUM);
-  dma_enable_transfer_complete_interrupt (DMA1, DMA_CHANNEL6);
-  dma_enable_transfer_error_interrupt (DMA1, DMA_CHANNEL6);
-  dma_enable_channel (DMA1, DMA_CHANNEL6);
-
-  i2c_enable_dma (I2C1);
-}
-
-
-void
-i2cp2_start_dma (uint8_t *buf, int len)
-{
-  dma_channel_reset (DMA1, DMA_CHANNEL4);
-  dma_set_peripheral_address (DMA1, DMA_CHANNEL4, (uint32_t) & I2C2_DR);
-  dma_set_memory_address (DMA1, DMA_CHANNEL4, (uint32_t) buf);
-  dma_set_number_of_data (DMA1, DMA_CHANNEL4, len);
-  dma_set_read_from_memory (DMA1, DMA_CHANNEL4);
-  dma_enable_memory_increment_mode (DMA1, DMA_CHANNEL4);
-  dma_set_peripheral_size (DMA1, DMA_CHANNEL4, DMA_CCR_PSIZE_8BIT);
-  dma_set_memory_size (DMA1, DMA_CHANNEL4, DMA_CCR_MSIZE_8BIT);
-  dma_set_priority (DMA1, DMA_CHANNEL4, DMA_CCR_PL_MEDIUM);
-  dma_enable_transfer_complete_interrupt (DMA1, DMA_CHANNEL4);
-  dma_enable_transfer_error_interrupt (DMA1, DMA_CHANNEL4);
-  dma_enable_channel (DMA1, DMA_CHANNEL4);
-
-  i2c_enable_dma (I2C2);
-}
-
-
-int
-i2cp1_dma_in_progress (void)
-{
-  return ! (DMA1_ISR & (DMA_ISR_TCIF6 | DMA_ISR_TEIF6));
-}
-
-int
-i2cp2_dma_in_progress (void)
-{
-  return ! (DMA1_ISR & (DMA_ISR_TCIF4 | DMA_ISR_TEIF4));
-}
-
-void
-i2cp1_stop_dma (void)
-{
-  DMA1_IFCR |= DMA_IFCR_CTCIF6 | DMA_IFCR_CTEIF6 | DMA_IFCR_CGIF6;
-
-  dma_disable_transfer_complete_interrupt (DMA1, DMA_CHANNEL6);
-  dma_disable_transfer_error_interrupt (DMA1, DMA_CHANNEL6);
-
-  i2c_disable_dma (I2C1);
-  dma_disable_channel (DMA1, DMA_CHANNEL6);
-}
-
-void
-i2cp2_stop_dma (void)
-{
-  DMA1_IFCR |= DMA_IFCR_CTCIF4 | DMA_IFCR_CTEIF4 | DMA_IFCR_CGIF4;
-
-  dma_disable_transfer_complete_interrupt (DMA1, DMA_CHANNEL4);
-  dma_disable_transfer_error_interrupt (DMA1, DMA_CHANNEL4);
-
-  i2c_disable_dma (I2C2);
-  dma_disable_channel (DMA1, DMA_CHANNEL4);
-}
-
-
-void
-i2cp_reset (uint32_t i2c)
-{
-  while (i2c_lock());
-
-  i2cp_start (i2c);
-  i2cp_abort_start (i2c);
-  i2cp_stop (i2c);
-  i2cp_abort_stop (i2c);
-
-  i2cp_start (i2c);
-  i2cp_abort_start (i2c);
-  i2cp_stop (i2c);
-  i2cp_abort_stop (i2c);
-  i2c_unlock();
-}
-
-
-
-void
-i2cp_scan (uint32_t i2c)
-{
-  int i, r;
-
-  i2cp_reset (i2c);
-
-  printf ("Probing bus\n");
-
-  for (i = 0; i < 128; ++i) {
-    printf ("%d\n", i);
-
-    while (i2c_lock());
-
-    i2cp_start (i2c);
-    i2cp_abort_start (i2c);
-    i2cp_stop (i2c);
-    i2cp_abort_stop (i2c);
-    delay_ms (10);
-    r = i2cp_start_transaction (i2c, i, I2C_WRITE);
-    i2cp_stop (i2c);
-    i2c_unlock();
-
-    if (!r)
-      printf ("Found device at address 0x%x\n", i);
-
-    usart1_drain();
-  }
-
-  printf ("Done\n");
-  i2cp_reset (i2c);
-
-}
-
-static void
-i2cp_bringup (uint32_t i2c)
-{
-  i2c_peripheral_enable (i2c);
-  i2c_clear_start (i2c);
-  i2c_clear_stop (i2c);
-  i2c_reset (i2c);
-  i2c_peripheral_enable (i2c);
-
-  I2C_CR1 (i2c) |= I2C_CR1_SWRST;
-  delay_us (1000);
-  I2C_CR1 (i2c) &= ~I2C_CR1_SWRST;
-
-
-  if (i2c == I2C1)
-    i2cp1_reset_sm();
-  else
-    i2cp2_reset_sm();
-
-
-  i2c_set_clock_frequency (i2c, I2C_CR2_FREQ_36MHZ);
-  i2c_set_standard_mode (i2c);
-  i2c_set_ccr (i2c, 0x80);      /* t_high=t_high=CCR * Tpclk1 */
-  i2c_set_trise (i2c, 0x0b);
-
-  i2c_set_own_7bit_slave_address (i2c, 0x00);
-
-  i2c_peripheral_enable (i2c);
-}
-
-
-void
-i2cp_init (void)
-{
-  rcc_periph_clock_enable (RCC_I2C1);
-  rcc_periph_clock_enable (RCC_I2C2);
-  rcc_periph_clock_enable (RCC_DMA1);
-
-  while (i2c_lock());
-
-  i2cp_bringup (I2C1);
-  i2cp_bringup (I2C2);
-
-  i2c_unlock();
-}